TEA

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TEA OBJ 5
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Question 1

• A moving walkway in an airport terminal moves at
  a speed of 1.3 m/s. A woman steps on the walkway
  and walks at an average speed of 1.7 m/s. A
  person drives a cart in the same direction
  alongside the walkway at 4.5 m/s. How much faster
  will the person driving the cart appear to move
  from the point of view of the person on the
  walkway?

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Question 1

• A moving walkway in an airport terminal moves at
  a speed of 1.3 m/s. A woman steps on the walkway
  and walks at an average speed of 1.7 m/s. A
  person drives a cart in the same direction
  alongside the walkway at 4.5 m/s. How much faster
  will the person driving the cart appear to move
  from the point of view of the person on the
  walkway?

• 1.3 1.7 3
• 4.5 3 1.5

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Question 2

• The Egyptians used inclined planes to build the
  pyramids, because pushing a stone up a ramp, or
  inclined plane, takes less force than lifting it
  straight up. How much work, in joules, is done if
  a person uses a force of 10 newtons (N) to move
  an object up an inclined plane that is 12 meters
  long?

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Question 2

• The Egyptians used inclined planes to build the
  pyramids, because pushing a stone up a ramp, or
  inclined plane, takes less force than lifting it
  straight up. How much work, in joules, is done if
  a person uses a force of 10 newtons (N) to move
  an object up an inclined plane that is 12 meters
  long?
• 120

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Question 3

• The diagram below shows a box and the direction
  of a force applied to the box. Which of the
  following vectors shows the direction of the
  reaction force?

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Question 3

• The diagram below shows a box and the direction
  of a force applied to the box. Which of the
  following vectors shows the direction of the
  reaction force?

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Question 4

• Glenn blows up a balloon. The force of the air in
  the balloon pushes against the walls of the
  balloon and it expands. What opposite force is
  also acting?

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Question 4

• Glenn blows up a balloon. The force of the air in
  the balloon pushes against the walls of the
  balloon and it expands. What opposite force is
  also acting?
• The balloon walls pushing against the air.

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Question 5

• What is a household items that is an example of a
  simple machine that makes use of the principle of
  a wedge?

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Question 5

• What is a household item that is an example of a
  simple machine that makes use of the principle of
  a wedge?
• Doorjamb

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Question 6

• Mr. Morris is trimming branches from the trees in
  his yard. Some branches are much thicker than
  others. He has two types of pruners to use, shown
  in the image below. Which pruner will be best for
  cutting the thicker branches off the trees?

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Question 6

• Mr. Morris is trimming branches from the trees in
  his yard. Some branches are much thicker than
  others. He has two types of pruners to use, shown
  in the image below. Which pruner will be best for
  cutting the thicker branches off the trees? A

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Question 7

• Building and home designers use stairs to get
  people from one level to the next. This is an
  efficient and space-saving feature that works
  very well for most people. Unfortunately, this
  system does not work well for individuals who use
  wheelchairs. Which simple machine would BEST aid
  people in wheelchairs to move from one level to
  the next?

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Question 7

• Building and home designers use stairs to get
  people from one level to the next. This is an
  efficient and space-saving feature that works
  very well for most people. Unfortunately, this
  system does not work well for individuals who use
  wheelchairs. Which simple machine would BEST aid
  people in wheelchairs to move from one level to
  the next?
• A long rope with an incline

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Question 8

• The diagram below shows a wave traveling through
  water. What is the amplitude of the wave?

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Question 8

• The diagram below shows a wave traveling through
  water. What is the amplitude of the wave? 2

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Question 9

• Based on the image, what is true about these
  three waves?

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Question 9

• Based on the image, what is true about these
  three waves?
• They have the same amplitude

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Question 10

• Compared to dull and rough rock surfaces, shiny
  and smooth rock surfaces are most likely to cause
  sunlight to be

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Question 10

• Compared to dull and rough rock surfaces, shiny
  and smooth rock surfaces are most likely to cause
  sunlight to be
• REFLECTED

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Question 11

• A ray of light hits a mirror in the following
  way
• What is the principle that describes why the
  light reflects the way it does?

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Question 11

• A ray of light hits a mirror in the following
  way
• What is the principle that describes why the
  light reflects the way it does?
• The angle of incidence is equal to the angle of
  reflection.

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Question 12

• What property of electromagnetic waves makes it
  possible to use this type of energy to transmit
  information between a satellite in space and
  computers on the ground?

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Question 12

• What property of electromagnetic waves makes it
  possible to use this type of energy to transmit
  information between a satellite in space and
  computers on the ground?
• Electromagnetic waves can travel through a vacuum

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Question 13

• A large amount of dynamite is exploded on a small
  island, so that sound waves from the explosion
  pass simultaneously into the air, sea, and
  underlying rock. Three microphones are placed 100
  miles from the explosion, one in air, one in
  water, and one in rock.

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Question 13

• A large amount of dynamite is exploded on a small
  island, so that sound waves from the explosion
  pass simultaneously into the air, sea, and
  underlying rock. Three microphones are placed 100
  miles from the explosion, one in air, one in
  water, and one in rock.
• Sound waves traveling through rock would arrive
  first

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Question 14

• Rachel is a certified scuba diver. She loves to
  go diving on the weekends with her friend Martin.
  When they were diving one afternoon, Rachel
  wanted to get Martins attention to show him a
  lobster, so she rapped on her tank with a small
  stone to create sound waves. When Martin heard
  the clanking, he looked all around before
  realizing where the sound was coming from. Why
  wasnt Martin able to find the direction of the
  sound right away?

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Question 14

• Rachel is a certified scuba diver. She loves to
  go diving on the weekends with her friend Martin.
  When they were diving one afternoon, Rachel
  wanted to get Martins attention to show him a
  lobster, so she rapped on her tank with a small
  stone to create sound waves. When Martin heard
  the clanking, he looked all around before
  realizing where the sound was coming from. Why
  wasnt Martin able to find the direction of the
  sound right away?
• Sound waves travel 4 times faster in water than
  in air so the time delay was too short to
  determine direction.

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Question 15

• When an incandescent lightbulb is turned on, only
  about 5 percent of the input energy is used to
  light the bulb. What happens to the other 95
  percent of the input energy?

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Question 15

• When an incandescent light bulb is turned on,
  only about 5 percent of the input energy is used
  to light the bulb. What happens to the other 95
  percent of the input energy?
• It is converted into heat energy and is released
  into the atmosphere.

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Question 16

• On a hot summer day, a cold glass of water is
  left out on the deck. The transfer of heat will
  be

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Question 16

• On a hot summer day, a cold glass of water is
  left out on the deck. The transfer of heat will
  be
• from the air to the water.

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Question 17

• Mike places a pot of water above a fire. The
  temperature of the fire is 180ºC. He measures the
  temperature of the water and finds that it is
  90ºC. Why is the water at a lower temperature
  than the fire?

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Question 17

• Mike places a pot of water above a fire. The
  temperature of the fire is 180ºC. He measures the
  temperature of the water and finds that it is
  90ºC. Why is the water at a lower temperature
  than the fire?
• Some of the heat energy from the fire is lost to
  the atmosphere.

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Question 18

• A battery is rated to provide 20 watts of power.
  When the battery is placed in a toy car, the
  car's kinetic energy increases as though the
  battery generated only 17 watts. Which statement
  best explains why?

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Question 18

• A battery is rated to provide 20 watts of power.
  When the battery is placed in a toy car, the
  car's kinetic energy increases as though the
  battery generated only 17 watts. Which statement
  best explains why?
• Some of the energy is lost as heat energy.

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Question 19

• A windmill uses the power of the wind to turn a
  wheel made of blades. This rotation produces
  mechanical energy. The mechanical energy is used
  to pump water from underneath the ground. What
  type of energy is produced when the wind causes
  the blades to rotate?

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Question 19

• A windmill uses the power of the wind to turn a
  wheel made of blades. This rotation produces
  mechanical energy. The mechanical energy is used
  to pump water from underneath the ground. What
  type of energy is produced when the wind causes
  the blades to rotate?
• kinetic energy

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Question 20

• Temperatures of two places, A and B, were
  recorded for 24 hours and tabulated as shown
  below. Place A is surrounded by forests and
  mountains, whereas place B is an industrial area.
  Why do you think place B was comparatively hotter
  than place A throughout the day?

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Question 20

• Temperatures of two places, A and B, were
  recorded for 24 hours and tabulated as shown
  below. Place A is surrounded by forests and
  mountains, whereas place B is an industrial area.
  Why do you think place B was comparatively hotter
  than place A throughout the day?
• Greenhouse gases and pollutants accumulate over
  industries to retain more of solar heat

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Question 21

• Solar power is used to perform all EXCEPT which
  of the following actions?

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Question 21

• Solar power is used to perform all EXCEPT which
  of the following actions?
• run a manual bicycle

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Question 22

• A clothing company is marketing garments that are
  able to disperse heat, remove perspiration, and
  prevent build-up of static electricity. This type
  of clothing is perfect for mail carriers who work
  during the hot and dry summer months in rural
  Texas. Which item(s) would you select for the
  mail carriers to wear?

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Question 22

• A clothing company is marketing garments that are
  able to disperse heat, remove perspiration, and
  prevent build-up of static electricity. This type
  of clothing is perfect for mail carriers who work
  during the hot and dry summer months in rural
  Texas. Which item(s) would you select for the
  mail carriers to wear?
• cotton

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Question 23

• You are examining four cylinders made of
  aluminum, each with a different length and
  cross-sectional area. Based on the sizes below,
  which would you expect to have the highest
  thermal conductivity given an equal temperature
  gradient?
•  

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Question 23

• You are examining four cylinders made of
  aluminum, each with a different length and
  cross-sectional area. Based on the sizes below,
  which would you expect to have the highest
  thermal conductivity given an equal temperature
  gradient?
• length 3 cm cross-sectional area 2 mm2 

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Question 24

• Irene bought a new house and has decided to
  rewire it. She wants to be able to turn some
  lights off and have the others remain lit. What
  type of circuits should she use and why?

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Question 24

• Irene bought a new house and has decided to
  rewire it. She wants to be able to turn some
  lights off and have the others remain lit. What
  type of circuits should she use and why?
• She should use parallel circuits because when one
  light turns off, the other lights remain lit.

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Question 25

• What happens when one light burns out in a
  parallel circuit?

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Question 25

• What happens when one light burns out in a
  parallel circuit?
• The other lights remain lit.

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Question 26

• Electromagnets are artificial magnets that are
  widely used in electronic appliances. They are
  made by wrapping wire coil around an iron core.
  The coil and the iron core do not exert magnetic
  force on their own. What produces the magnetic
  force in these electromagnets?

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Question 26

• Electromagnets are artificial magnets that are
  widely used in electronic appliances. They are
  made by wrapping wire coil around an iron core.
  The coil and the iron core do not exert magnetic
  force on their own. What produces the magnetic
  force in these electromagnets?
• electric force of the vibrating electrons in the
  current-carrying wire

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Question 27

• Which of the following is an inaccurate
  representation of the relationship between
  electricity and magnetism?

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Question 27

• Which of the following is an inaccurate
  representation of the relationship between
  electricity and magnetism?
• A compass converts an electrical charge to
  magnetism.

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Question 28

• The illustration below shows the water
  temperature at four different points in a pool.
  Based on what you know about the transfer of
  heat, which is true?

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Question 28

• The illustration below shows the water
  temperature at four different points in a pool.
  Based on what you know about the transfer of
  heat, which is true?

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Question 29

• Which of the following describes the flow of heat
  in a low-pressure weather system?

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Question 29

• Which of the following describes the flow of heat
  in a low-pressure weather system?
• Warmer air rises from the system, cools as it
  rises, and so transfers energy out of the system.

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Question 30

• The picture below shows a small cube in a glass
  of water. The densities of several substances are
  listed in the table. Which of the substances in
  the table could the cube be made of?

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Question 30

• The picture below shows a small cube in a glass
  of water. The densities of several substances are
  listed in the table. Which of the substances in
  the table could the cube be made of?
• Cork

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Question 31

• When small particles settle through water faster
  than large particles, the small particles are
  probably

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Question 31

• When small particles settle through water faster
  than large particles, the small particles are
  probably
• denser.

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Question 32

• In Ernest Rutherfords famous gold-foil
  experiment, a beam of positively charged
  particles was aimed at a very thin sheet of gold
  foil. His surprising results showed that although
  most of the particles passed through the gold
  foil as expected, some of the particles were
  deflected, and a few even bounced back. Which of
  the following atomic models best fits
  Rutherfords results?

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Question 32

• In Ernest Rutherfords famous gold-foil
  experiment, a beam of positively charged
  particles was aimed at a very thin sheet of gold
  foil. His surprising results showed that although
  most of the particles passed through the gold
  foil as expected, some of the particles were
  deflected, and a few even bounced back. Which of
  the following atomic models best fits
  Rutherfords results?
• The atom is mostly empty space, with a tiny
  nucleus of positively charged particles.

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Question 33

• Democritus, a Greek philosopher, thought that you
  could keep cutting something into smaller and
  smaller pieces, and you would eventually end up
  with a particle that could no longer be cut.
  Democritus called that particle a(n)

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Question 33

• Democritus, a Greek philosopher, thought that you
  could keep cutting something into smaller and
  smaller pieces, and you would eventually end up
  with a particle that could no longer be cut.
  Democritus called that particle a(n)
• Atom

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Question 34

• During a fireworks display after a football game
  at the high school, Stella become curious about
  how the different colors of the fireworks are
  created. She suspects they are created by
  different materials that burn with different
  colors. Which of the following analysis
  techniques could she use to safely find what
  materials are used in the fireworks?

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Question 34

• During a fireworks display after a football game
  at the high school, Stella become curious about
  how the different colors of the fireworks are
  created. She suspects they are created by
  different materials that burn with different
  colors. Which of the following analysis
  techniques could she use to safely find what
  materials are used in the fireworks?
• spectral analysis 

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Question 35

• You have the opportunity to work for your uncle's
  fireworks company. Recently, the company had
  moved all of their materials from one warehouse
  to another. During the move, the labels fell off
  several containers that hold the metal salts that
  make the colors in fireworks. You need to figure
  out an inexpensive way to determine which of the
  metal salts produce what colors. Which test will
  you run on the metal salts?

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Question 35

• You have the opportunity to work for your uncle's
  fireworks company. Recently, the company had
  moved all of their materials from one warehouse
  to another. During the move, the labels fell off
  several containers that hold the metal salts that
  make the colors in fireworks. You need to figure
  out an inexpensive way to determine which of the
  metal salts produce what colors. Which test will
  you run on the metal salts?
• Conduct a simple flame test using ethanol as the
  control.

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Question 36

• Beryllium oxide (BeO) is the most powerful
  oxidizing agent, while strontium oxide (SrO) is
  the least. What can you conclude from this
  statement?

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Question 36

• Beryllium oxide (BeO) is the most powerful
  oxidizing agent, while strontium oxide (SrO) is
  the least. What can you conclude from this
  statement?
• The oxidizing power of an element decreases along
  a group.

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Question 37

• Iodine is placed in the group of halogens on the
  periodic table. Which of the following statements
  supports the classification of iodine as an
  element?

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Question 37

• Iodine is placed in the group of halogens on the
  periodic table. Which of the following statements
  supports the classification of iodine as an
  element?
• It cannot be decomposed.

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Question 38

• Which of the following is a physical property of
  water?

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Question 38

• Which of the following is a physical property of
  water?
• Water freezes and becomes a solid at 0C.

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Question 39

• Glow sticks can be made from different chemical
  combinations. Rory had two different brands of
  glow sticks that he bought for a school camping
  trip. When he snapped both sticks at the same
  time, he noticed that one of the sticks glowed
  brighter. What can be assumed about the chemicals
  in the stick that glowed brighter?

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Question 39

• Glow sticks can be made from different chemical
  combinations. Rory had two different brands of
  glow sticks that he bought for a school camping
  trip. When he snapped both sticks at the same
  time, he noticed that one of the sticks glowed
  brighter. What can be assumed about the chemicals
  in the stick that glowed brighter?
• their kinetic energy was greater when combined

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Question 40

• Batteries work by creating a reaction between two
  chemicals. When some batteries have been
  completely used, they have less mass than unused
  batteries. Which of the following statements best
  describes this?
• .

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Question 40

• Batteries work by creating a reaction between two
  chemicals. When some batteries have been
  completely used, they have less mass than unused
  batteries. Which of the following statements best
  describes this?
• Mass has been converted into energy.

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Question 41

• Nuclear fusion is one of the universes most
  fundamental processes. Essentially it is
  responsible for all of the energy we use here on
  Earth. What happens during fusion?

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Question 41

• Nuclear fusion is one of the universes most
  fundamental processes. Essentially it is
  responsible for all of the energy we use here on
  Earth. What happens during fusion?
• Hydrogen (H) atoms merge to form helium (He) and
  release energy.

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Question 42

• After three days of rain, cars in a one block
  area displayed discolored spots on the hoods and
  rooftops. This area has quite a few factories
  that produce heavy air pollution. Which of the
  following describes the most probable cause of
  the damage to the cars?

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Question 42

• After three days of rain, cars in a one block
  area displayed discolored spots on the hoods and
  rooftops. This area has quite a few factories
  that produce heavy air pollution. Which of the
  following describes the most probable cause of
  the damage to the cars?
• The byproducts of combustion from factories and
  car engines mixed with the air and rain to form
  nitric and sulfuric acids.

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Question 43

• What happens to sodium chloride (NaCl) when it is
  mixed with the "universal solvent," water (H20).

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Question 43

• What happens to sodium chloride (NaCl) when it is
  mixed with the "universal solvent," water (H20).
• Na and Cl- are split apart and become free ions
  which then "float" freely in the water solution

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Question 44

• Healthy human blood has a pH between 7.38 and
  7.42. If your pH drops below 7, your body may not
  function properly because your blood has become

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Question 44

• Healthy human blood has a pH between 7.38 and
  7.42. If your pH drops below 7, your body may not
  function properly because your blood has become
• acidic.

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Question 45

• A SCUBA diver is diving to the bottom of a body
  of water that is over 100 meters deep. He needs
  to be careful and ascend slowly, because he might
  get "the bends" and could possibly die. This is
  also known as decompression sickness and can
  happen when nitrogen bubbles build up in the
  blood stream. This happens because?

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Question 45

• A SCUBA diver is diving to the bottom of a body
  of water that is over 100 meters deep. He needs
  to be careful and ascend slowly, because he might
  get "the bends" and could possibly die. This is
  also known as decompression sickness and can
  happen when nitrogen bubbles build up in the
  blood stream. This happens because?
• with increasing underwater pressure, the
  solubility of nitrogen gas increases.

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Question 46

• After a big meal late at night, some people
  suffer from acid indigestion. Acid indigestion
  occurs when the stomach makes too much
  hydrochloric acid (HCl), causing pain. Many
  people treat this situation with antacids that
  they have to dissolve in a glass of water. In
  this situation, a crushed tablet would

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Question 46

• After a big meal late at night, some people
  suffer from acid indigestion. Acid indigestion
  occurs when the stomach makes too much
  hydrochloric acid (HCl), causing pain. Many
  people treat this situation with antacids that
  they have to dissolve in a glass of water. In
  this situation, a crushed tablet would
• dissolve faster than a whole table.