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Earth's Layers
Earth's Layers
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Florida 7th Grade Earth's Layers, Earth's Systems, Earth's Landforms.
Flashcards
55 cards
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Questions
55
Answers
1
What is A?
hydrosphere
atmosphere
geosphere
biosphere
2
Where on Earth are the longest mountain ranges located?
near the centers of the oceans
lower parts of Antarctica
the western United States and Mexico
on the Continental crust
3
What is B?
geosphere
atmosphere
biosphere
hydrosphere
4
What is a nebula?
a cloud of dust, gas, and ice
a sun
a giant explosion
a star
5
More than 70 percent of Earth is covered in water. Why is water considered a scarce resource?
Most water is in the water cycle and cannot be drank
Most water is in the oceans and too salty to drink
Most water is in the atmosphere
Most water is frozen
6
Which is a layer NOT found in Earth’s mantle?
crust
lithosphere
upper mantle
asthenosphere
7
Which helped the newly formed Earth become a sphere in shape?
the magnetic field
density
heat
gravity
8
Differences in ____ cause hot, plasticlike rock in asthenosphere rise toward Earth's surface.
weight
density
composition
magnetism
9
Earth’s core is mostly made of which metal?
gold
aluminum
nickel
iron
10
Which layer best represents the inner core ?
4
2
3
1
11
Find the density of an object that has a volume of 20 cm3 and a mass of 56 g.
1.7 g/cm3
4.3 g/cm3
2.8 g/cm3
3.8 g/cm3
12
An example of a raised, flat area is/are the ____.
Colorado Plateau
Grand Tetons
Appalachian Mountains
Coastal Plains
13
Which is NOT a way scientists have been able to study Earth’s interior?
digging deep wells into Earth’s core
measuring earthquake wavestraveling through Earth’s surface
gathering samples from the liquid outer core
weigh rocks found near the outer core determining densities
14
All of the following are part of Earth’s biosphere EXCEPT _____.
wolves
carbon dioxide
oak tree
bacteria
15
Which best explains why landforms are not permanent?
Once created landforms do not change.
Earth’s magnetic field compresses the surface.
Landforms are shaped by erosion and uplift.
Gravity pulls on landforms molding them to spherical shape.
16
Which is an example of a landform with a low relief and a high elevation?
Atlantic Coastal Plains
Interior Plains
Appalachian Mountains
Ozark Plateau
17
Many landforms are found both Earth’s surface the ocean floor. Which cannot be found on both?
peninsula
mountain
canyon
plateau
18
The blanket of gases that surround Earth
biosphere
hydrosphere
geosphere
atmosphere
19
What happens to the force of gravity when the distance between two objects decreases?
it stays the same
it decreases
no attraction
it increases
20
Which term is used to describe the shape of a geographic area?
elevation
topography
landform
relief
21
The water in Earth's oceans, seas, lakes, rivers, and glaciers
geosphere
hydrosphere
biosphere
atmosphere
22
What does the minus sign in front an elevation signify?
It is subtracting the parts below water from above water
That is in the Southern Hermpishpere
That it is found below sea level
That it is near the equator
23
Glaciers are part of Earth’s _____.
mantle
outer core
atmosphere
hydrosphere
24
Which is the correct formula to find density?
D = m + V
D = m x V
D = m/V
D = m – V
25
Alignment of iron minerals in rocks when formed shows Earth's ____ has reversed in the past.
asthenosphere
core
magnetic field
gravity
26
Largest layer of Earth
lithosphere
core
mantle
asthenosphere
27
Which of the following would best describe a mountain?
low elevation, low relief
high elevation, low relief
high elevation, high relief
low elevation, high relief
28
All organisms on Earth and the environments in which they live.
cryosphere
biosphere
hydrosphere
geosphere
29
The more dense an object _____.
the weaker the gravitational force
the less affect it has on the magnetic field
the more round the object
the stronger the gravitational force
30
Outermost layer of Earth
crust
asthenosphere
lithosphere
mantle
31
The partially molten layer of Earth's mantle
asthenosphere
lithosphere
uppermost mantle
lower mantle
32
What is C?
hydrosphere
atmosphere
geosphere
biosphere
33
Which statement is true?
The most dense materials collected together form the core.
The solar system was formed from a cloud called biosphere.
The hydrosphere smoothed out the irregular bumps.
Earth was formed prior to the Sun.
34
Large, flat areas of land
basins
plateaus
mountains
plains
35
Flat, raised areas of land
mountains
plains
basins
plataeus
36
Plates of the lithosphere float on the ____.
core
crust
lower mantle
asthenosphere
37
How is this bar magnet representative of Earth’s magnetic field?
They cure bone stiffness
They have uncharged particles
They both attract metal so astroids hit Earth
They both have have opposite poles
38
Which belongs to Earth’s geosphere?
oceans
mountains
carbon dioxide
foxes
39
Which of these does NOT explain how mountains can form?
a build up of lava on the ocean floor
a force causing rocks to fold on top of each other
sediments deposited by water or wind
a force from inside Earth which causes an uplift of rocks
40
Describe a plain.
Low elevation, low relief
High elevation, low relief
High elevation, high relief
Low elevation, high relief
41
Use the map to answer the question. Which statement below is correct?
Most common landform found on Earth’s surface are plains.
Most of Africa is located on top of a plateau.
Given enough time, all plateaus eventually become mountains.
Mountains are only found near Earth’s equator.
42
Earth believed to be in the shape of a flat disk, scientists know is really shaped like a_____.
square
pentagon
sphere
elliptical
43
Which term is used to explain how high or low a landform is above or below sea level?
slope
elevation
feature
topography
44
Why are plains the best landforms for growing crops or grazing animals?
Plains have a low elevation, easier to lead animals to them.
Soil found in plains is rich in deposits, plants grow well.
Plains is most abundant. to grow crops and cattle.
Plains have a high relief so more precipitation is there.
45
Which statement is NOT true about Earth’s magnetic field?
It has reversed directions many times in Earth’s past.
Protects Earth from cosmic rays and particles from the Sun.
Its strength has remained the same throughout history.
It originates in Earth’s core.
46
The different layers formed on Earth are due to the differences in _____ of the materials.
the climate
the mass
the volume
the density
47
What is D?
geosphere
hydrosphere
atmosphere
biosphere
48
Scientists believe the deeper into the geosphere _____.
temperature increases as pressure decreases
temperature and pressure both decrease
temperature and pressure both increase
temperature decreases as pressure increases
49
The crust and uppermost mantle make up Earth's ____.
core
asthenosphere
continents
lithosphere
50
Contrast lithosphere and asthenosphere
litosphere is liquid, asthenosphere is solid
lithosphere is above the crust, asthenosphere is below
lithospher is rigid, asthenosphere is semimolton and flows
lithosphere is cooler to say than asthensphere
51
The rigid outer shell of Earth
atmosphere
crust
geosphere
mantle
52
How long ago do scientists believe our solar system formed?
6.4 billion years ago
4.6 billion years ago
5.3 billion years ago
3.4 billion years ago
53
Which objects does the force of gravity pull together?
all objects
metal objects
dust
stars
54
Which of Earth’s systems makes up all the living organisms found on Earth?
hydrosphere
biosphere
geosphere
atmosphere
55
Which layer of Earth is the most dense?
outer core
crust
inner core
mantle
