TOPIC: Measurement AIM: How can we measure volume, mass, and density?

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Topic Lab Skills Aim How can volume be
determined?
Volume of the water can be measured by
_________________________________________________
_____
Do Now
How can we measure the volume of this sample of
water?
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• What is
• volume?

• The amount of space an object takes up
• UNITS L or cm3

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Volume of liquids is determined by using a
graduated cylinder
Volume is measured with liters
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• Measure at the MENISCUS

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V 73 mL
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V 18 mL
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V 294 mL
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V 6.6 mL
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V 21.5 mL
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• How is
• Volume of a solid
• measured?

• V L x W x H

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• Example
• L 2 cm, W1 cm, H1 cm
• V L x W x H
• V 2cm x 1cm x 1cm
• V 2 cm3

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• Example V ?

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• V L x W x H
• V 2cm x 3cm x 5cm
• V 30 cm3

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• Water Displacement
• to measure volume of an irregular shaped object
• Use graduated cylinder
• V Volume of water with object Volume of water
  without object

How can we measure the volume of this rock?
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V 9 7 2 V 2 mL
V1 7 mL
V2 9 mL
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Example
V 20 11.5 V 8.5 mL
V1 11.5 mL
V2 20 mL
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Whats the volume? ________mL
150
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Topic Lab Skills Aim How is mass determined?
What is the volume of the rock in the diagram to
the left?
Do Now
Volume 3.0 mL
How could we determine the mass of the rock?
Triple beam balance
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• What is
• mass?

• Amount of matter that an object contains

What unit can be used to describe mass?
GRAM
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When you hit a volleyball, it might hurt just a
bit as it bounces off your hands to go sailing
over the net. That's because, although a
volleyball isn't very massive, the mass it does
have makes it resist your effort to change its
motion. Bowling balls, on the other hand, possess
much more mass than volleyballs do. If you tried
to knock a bowling ball over the net, you just
might break your arm!
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• How is
• mass
• measured?

• TRIPLE BEAM BALANCE

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Mass 542 gm
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Mass 137.4 gm
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Mass 25.4 gm
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Mass 79.4 gm
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weight is a measurement of the gravitational
force acting on an object
How is mass DIFFERENT from weight?
Weight varies based on location, whereas mass is
constant.
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Earth vs. Moon
If your weight on Earth is 100lbs, on the Moon it
would be 16 lbs.
If your mass on Earth is 65Kg, your mass on the
Moon would be 65Kg
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