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WorksheetsYear 8 - Earth Structure
Total questions: 40
Worksheet time: 31mins
Name
Class
Date
1.
Which layer is made up of iron and nickel?
a)
Crust
b)
Mantle
c)
Inner Core
d)
Lithosphere
2.
What are the two types of crust?
a)
top crust and bottom crust
b)
oceanic crust and continental crust
c)
pizza crust and toast crust
d)
lithocrust and asthenocrust
3.
Which physical layer is the thinnest?
a)
crust
b)
mantle
c)
core
4.
Which compositional layer is made of iron and some nickel?
a)
crust
b)
mantle
c)
core
5.
Which mechanical layer is made of solid iron and some nickel?
a)
Asthenosphere
b)
Outer core
c)
Lithosphere
d)
Inner core
6.
What type of heat transfer in found in Earth"s asthenosphere?
a)
Conduction
b)
Convection
c)
Radiation
d)
I don't know
7.
Which sublayer is made up of the crust and upper mantle?
a)
Inner Core
b)
Outer Core
c)
Lithosphere
d)
Asthenosphere
8.
Geologists' main evidence about the structure of Earth's interior comes from
a)
temperature measurements in deep mines
b)
observations of other planets
c)
exploration of caves
d)
rock samples and seismic waves
9.
What is the correct order (starting from the surface) of Earth's layers?
a)
crust, outer core, inner core, mantle
b)
mantle, outer core, inner core, crust
c)
crust, mantle, outer core, inner core
d)
outer core, inner core, crust, mantle
10.
Earth's inner core is...
a)
a dense ball of solid iron and nickel.
b)
a layer of molten iron and nickel.
c)
a layer of hot rock.
d)
a layer of rock that forms Earth's outer skin.
11.
Earth's mantle is
a)
a layer of molten metal.
b)
a layer of hot rock.
c)
a dense ball of solid metal.
d)
a layer of rock that forms Earth's outer skin.
12.
What is the difference between the inner and outer core?
a)
The outer core is liquid, the inner core is solid.
b)
The inner core is liquid and the outer core is solid.
c)
The outer core is made of nickel and the inner core is made of iron.
d)
The outer core is hotter than the inner core.
13.
What is the top layer of the Earth's surface called?
a)
Mantle
b)
Inner core
c)
Outer core
d)
Crust
14.
This layer of Earth is the thickest part.
a)
crust
b)
outer core
c)
mantle
d)
inner core
15.
What are earth's three main layers?
a)
Core, mantle, and asthenosphere
b)
Core, mantle, and crust
c)
Inner core, outer core, and mantle
d)
Upper mantle, lower mantle, and crust
16.
The layer of the Earth that is made of the least dense materials is the
a)
mantle
b)
crust
c)
core
17.
Which layer of Earth would you expect to have the greatest pressure?
a)
core
b)
crust
c)
the atnosphere
d)
mantle
18.
Which layer of the earth have the greatest temperature?
a)
core
b)
crust
c)
mantle
d)
the atmosphere
19.
What is true of the asthenosphere?
a)
It is rock and liquid
b)
It is rock and solid
c)
It is iron and liquid
d)
It is iron and solid
20.
What is true of the mantle?
a)
It is rock and liquid
b)
It is rock and solid
c)
It is iron and liquid
d)
It is iron and solid
21.
What is true of the inner core?
a)
It is rock and liquid
b)
It is rock and solid
c)
It is iron and liquid
d)
It is iron and solid
22.
What is true of the outer core?
a)
It is rock and liquid
b)
It is rock and solid
c)
It is iron and liquid
d)
It is iron and solid
23.
Because the inner core spins faster than the rest of the Earth, ...
a)
the earth has a magnetic field.
b)
tectonic plates move on top of the Earth.
c)
there are no living things in the inner core.
d)
there are waves on the ocean.
24.
Which is the least dense of these layers?
a)
Crust
b)
Asthenosphere
c)
Mantle
d)
Core
25.
Scientists think that convection currents that move the plates flow in Earth's
a)
Continental crust
b)
oceanic crust
c)
Asthenosphere
d)
Lithosphere
26.
Identify each layer - #17.
a)
Crust
b)
Mantle
c)
Lithosphere
d)
Asthenosphere
27.
What do geologists call the crust and upper mantle?
a)
asthenosphere
b)
stratosphere
c)
mesosphere
d)
lithosphere
28.
Holes drilled in the earth provide DIRECT evidence in the form of
a)
seismic waves
b)
rock samples
c)
liquid iron
d)
volcanic eruptions
29.
Identify layer #20.
a)
mantle
b)
pizza crust
c)
inner core
d)
outer core
30.
Identify layer #18.
a)
mantle
b)
pizza crust
c)
inner core
d)
outer core
31.
Which layer is a liquid?
a)
17
b)
18
c)
19
d)
20
32.
Layer #15 is part of the crust. What type of crust is it??
a)
Toast
b)
Oceanic
c)
Continental
d)
Pizza
33.
Less dense materials rise to the top.
a)
True
b)
False
34.
Hot matter is _________ dense and ___________
a)
less, sinks
b)
less, rises
c)
more, sinks
d)
more, rises
35.
What is the heat source for convection in the mantle?
a)
the Crust
b)
the Mantle
c)
the Core
36.
Which layer is the OUTER CORE?
a)
1
b)
2
c)
3
d)
4
37.
The core is made-up of what two elements?
a)
iron and nickel
b)
iron and oxygen
c)
nickel and silicon
d)
oxygen and silicon
38.
Oceanic crust is contains a lot of which type of rock below:
a)
Glam Rock
b)
Granite
c)
Punk Rock
d)
Basalt
39.
Continental crust is contains a lot of which type of rock below:
a)
Glam Rock
b)
Granite
c)
Punk Rock
d)
Basalt
40.
When we say that the Asthenosphere is plastic, we mean it :
a)
is made of the same stuff as a bendy ruler.
b)
is a liquid
c)
is a gas
d)
can flow
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