# Measuring Earth: Earth - PowerPoint PPT Presentation

PPT – Measuring Earth: Earth PowerPoint presentation | free to download - id: 4225c3-MTgxY

The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
Title:

## Measuring Earth: Earth

Description:

### Measuring Earth: Earth s Size and Shape Earth s Shape Earth s Shape Smoothness of the Earth (1) What is the most abundant element in the earth s ... – PowerPoint PPT presentation

Number of Views:349
Avg rating:3.0/5.0
Slides: 55
Provided by: MarkP180
Category:
Tags:
Transcript and Presenter's Notes

Title: Measuring Earth: Earth

1
Measuring Earth Earths Size and Shape
Unit 1
Study Guide

2
Earths Shape
What is the true shape of the Earth?
OBLATE SPHEROID
flat at the poles and bulging at the center
3
Earths Shape
Which of the following models is the correct
scale model of the Earth?
OR
?
4
(No Transcript)
5
Smoothness of the Earth
Which is smoother the Earth or a classroom
globe?
the Earth
the relief of a classroom globe is exaggerated
6
What is the formula for circumference?
Eratosthenes Formula
Angle distance
360
Circumference
7
Circumference distance around the earth
8
Latitude Longitude
9
Latitude lines are parallel.
They NEVER meet
10
Longitude lines are meridians and meet at the
poles.
Looks like a peeled orange.
11
Latitude Longitude
Lines of latitude measure
South
North
and
of the equator
12
North
Equator
South
13
How many degrees of latitude are there?
90 degrees
14
What is the latitude of the equator?
0 degrees
What is the latitude of the North Pole?
90 degrees
15
(No Transcript)
16
LATITUDE
ALTITUDE OF POLARIS

Demo
17
POLARIS CAN ONLY BE SEEN IN THE HEMISPHERE
NORTHERN
18
PolarisNorth StarLATITUDE
For Drawing See location of North Star on next
slide
19
Draw location of North Star
20
If the North Star is 50 degrees
above the horizon-
50 degrees North!
21
How is Longtiude Measured?
Longitude is measured and from the
East
West
Prime Meridian
22
Longitude
How is longitude measured?
To get to the next line of longitude, you must
move in which of two directions?
Prime Meridian
23
East
West
Prime Meridian
24
LONGITUDE
IS BASED ON EARTHS
ROTATION
25
LONGITUDE
EACH HOUR THE EARTH ROTATES
15
(360/24hrs)
26
People on the same line of longitude have the same
Local Time
27
Later
Earlier
HOW MANY TIME ZONES?
28
HOW MANY TIME ZONES?
24 TIME ZONES 15 APART
29
Example Two students record a difference in
local time of two hours. How many degrees of
longitude apart are they?
15 x 2 hours 30
30
(No Transcript)
31
What is the latitude and longitude of POINT B?
40 N, 120 W
Practice
32
What is the latitude and longitude of POINT G?
Practice
45 S, 80 E
33
What is the latitude and longitude of POINT D?
10 S, 40 W
Practice
34
Topographic Maps
35
What is the purpose?
To see the shape and elevation of the land
36
What is the Contour Interval?
25
The change in elevation between 2 contour lines.
37
Contour Interval?
20
Elevation of "A"?
540
Elevation of "B"?
580
38
Why??? If there was another line it would be
620 so the highest value before is 619 feet.
Highest possible elevation?
619
39
What do hachured lines show?
areas of depression
40
What are the rules concerning hachured lines?
first hachured line has same elevation as
previous contour line then drops by the contour
interval
41
How you can determine which way a river flows
on a topographic map?
(1) Contour lines point to the source of
a river (upstream)
(2) The river flows opposite the V s.
42
If north is at the top of the page, what
direction is this river flowing?
south
43
What is a topographic profile ?
A three dimensional graph of a contour map
44
distance
the slope or steepness of the land
45
Answer the following based on the map.
Note Hill B has Hachure Lines
46
Answer the following based on the map.
1. What is the contour interval of this map?
2. What is the elevation of POINT E?
3. What is the elevation of POINT F?
4. What is the elevation of POINT D?
5. What is the elevation of POINT A?
6. What is the elevation of POINT G?
7. What is the elevation of POINT C?
8. What is the elevation of POINT B?
9. Which side of HILL C is the steepest?
10. Which way is the Cinder River Flowing?

20 meters
0 meters
30 meters
60 meters
139 meters
40 meters
60 meters
40 meters
south
northwest
47
If the distance between the two circled cities
is 400 km, calculate the temperature gradient
to the nearest hundredth? Show all work.
distance
80-60 400
20 400
0.05 F/km
48
Using the ESRT (Unit 1)
49
• (1) What is the most abundant element in the
• earths crust by volume?
• (2) What is the latitude of Slide Mountain?
• (3) What is the temperature at the boundary of
the
• earths mantle and outer core?
• (4) What layer of the atmosphere contains the
• most water vapor?

oxygen
42 degrees
5000 degrees C
troposphere
50
Page 1
51
Page 3
52
Page 10
53
Page 14
54
Know the following
• Know how to use the ESRT for this unit!
• Be able to read and interpret a contour map.
• Be able to calculate gradient (change in
elevation or temperature)
• Be able to draw a topographic profile.
• Know how to draw and read an isotherm map.
• Know how to use latitude and longitude on a map
or globe.
• Know the shape of the EarthOBLATE SPHEROID
• Know that the altitude of Polaris (North Star)
equals the
• LATITUDE of the observer!
• Know the Equator 0 degrees Latitude and the
Prime Meridian 0 degrees Longitude.
• Know the Latitude of the North Pole 90 degrees.
• Know lithosphere (land), hydrosphere (water) and
atmosphere
• ( air).
• A river flows opposite the Vs and hachure lines
show depression.
• Study ALL notes, worksheets and study guides.
• See Chapter 3 in the text.