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Earth Structures
Earth Structures
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#7th grade science #7th grade earth structure
Flashcards
28 cards
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Questions
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Answers
1
The crust is thickest at the equator.
False
True
2
How thick is the oceanic crust?
2 to 4 kilometers
1 to 3 kilometers
5 to 7 kilometers
5 to 10 kilometers
3
The mid-ocean ridge is...
a series of mountain ranges under the ocean
all of the above
a series of valleys under the ocean
a series of deserts under the ocean
4
What layer is right under the Earth's crust?
atmosphere
mantle
inner core
core
5
Magma is found...
both
coming out of volcanoes
under the Earth's crust and upper part of the mantle
6
Iron is found...
all of the layers of the earth have iron
only the inner core has iron
in the mantle, in the atmosphere, in the outer core
on the crust, in the mantle, in the core
7
Which layer of the atmosphere is farthest from the Earth's surface?
mesosphere
troposphere
exosphere
thermosphere
8
How many hemispheres are found on earth?
1
3
4
2
9
Which of these are continents found on Earth?
Europe, Asia, United States
Brazil, North America, Africa
Middle East, New Zealand, Antarctica
South America, Australia, Africa
10
The equator ...
separates the two hemispheres on Earth.
is a line that is only visible from space.
a undersea canyon.
separates the Pacific Ocean from the Atlantic Ocean.
11
Latitude lines...
run parallel north and south around the earth
run parallel east and west around the earth
12
What types of faults are found on the earth?
normal faults
strike-slip faults
reverse faults
all of the above
13
What evidence of Pangea is there?
the seas
cracks in the earth
fossils
foot prints
14
What makes up the
Ring of Fire
...
oceanic trenches, volcanic belts, tectonic plate movement
tectonic plates, islands
volcanoes, lakes
oceanic ridges, earthquakes
15
Continent Drift Theory states...
that the continents switch places every 100,000 years
that mountains and valleys drift on the crust
that parts of the Earth's crust drift atop a liquid core
that the oceans move around the earth over continents
16
Scientist believe there was a super giant continent they call...
South America
Pangea
North America
Asia
17
Under what lakes are there fault lines?
Lake Mead, the Great Salt Lake
Lake Mead, Lake Powell
Lake Mead, Bear Lake
Lake Powell, Bear Lake
18
What do plate tectonics do?
cause earthquakes
cause continents to shift
all of the above
cause volcanoes
19
Longitude lines run...
east and west around the earth
north and south around the earth
20
Under which ocean is the mid-ocean ridge located?
Pacific Ocean
Arctic Ocean
Indian Ocean
Atlantic Ocean
21
How many continents are there?
9
7
3
5
22
What layer of the atmosphere does weather happen?
thermosphere
troposphere
stratosphere
mesosphere
23
At what level of the atmosphere will you find the hottest temperatures?
thermosphere
exosphere
mesosphere
stratosphere
24
How many major tectonic plates are there?
5
3
6
7
25
Does the Hawaiian Islands lie on...
Continental Crust
Oceanic Crust
26
Where is the ozone located?
the stratosphere
the mesosphere
the lithosphere
the thermosphere
27
What is elevation?
height of an airplane flying at 30,000 feet
height of an elevator ride
height of sea level during low tide
height of the earth's crust that rises above sea level
28
What layer of the earth are temperatures between 4300-7200 degree Celsius?
inner core
outer core
crust
mantle
