AnswersMO-Earth and Space Science ALab: Mineral and Rock Classification

Lab: Mineral and Rock Classification — Cumulative exam Answers

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3

Which method preserves an image of a leaf?

A
The leaf turns into rock over time.
B
Tree sap flows over the leaf and preserves it.
C
Sediment covers the leaf and leaves an imprint on the rock.
D
As the leaf decomposes, carbon from the leaf is left on the rock.
4

Which process forms sedimentary rock in the rock cycle after sediments accumulate and combine?

A
Sediments undergo heat and pressure.
B
Sedimentary rock weathers and erodes.
C
Sediments compact and cement together.
D
Sedimentary rock experiences cooling and melting.
5

Which is a type of star system?

A
dim stars
B
solar system planets
C
wobbling stars
D
globular clusters
6

What determines the length of a geologic time period?

A
fossil record
B
material density
C
meteors and rocks
D
radioactive materials
8

Study this image of lithospheric plates.

Question illustration
A
Pacific, Eurasian, and African
B
African, North American, and South American
C
Eurasian, African, and South American
D
North American, Pacific, and African
9

Which best explains how scientists confirmed that the moon formed around the same time as Earth?

A
Scientists determined the approximate age of fossils from the moon and Earth.
B
Scientists used radioactive dating to study the age of material from the moon and Earth.
C
Scientists explored the cycle of condensation and evaporation over time on the moon and Earth.
D
Scientists analyzed the content of gases that were part of the atmospheres on the moon and Earth.
10

Which statement is an example of an observation a scientist would make to classify a rock?

A
A rock is larger than other rocks.
B
A rock was found in a stream.
C
A rock is formed from molten lava.
D
A rock cracks in half after a rainstorm.
11

Which is a factor that keeps Earth in orbit around the Sun?

A
the orbital path of the moon
B
the gravitational pull of the Sun
C
the continuous motion of the universe
D
Earth’s changing speed and direction
12

Which features form along all types of plate boundaries?

A
faults
B
rift valleys
C
mountains
D
ocean ridges
13

What was discovered in 1965 and is believed to be leftover thermal energy from the big bang?

A
red shift
B
the Eagle Nebula
C
the Doppler effect
D
background radiation
14

Study the image of this rock.

Question illustration
A
jagged
B
oval
C
round
D
smooth
15

Which correctly lists the three features of Earth that are the main types of landforms?

A
hills, valleys, and plateaus
B
lakes, valleys, and mountains
C
mountains, plains, and plateaus
D
plains, lakes, and hills
16

Which phrase best describes igneous rocks?

A
form when lava and magma cool
B
accumulate sediments following erosion
C
require heat and pressure to be formed
D
consist of many sediment layers
17

What occurs when Earth’s shadow covers the moon?

A
neap tide
B
spring tide
C
solar eclipse
D
lunar eclipse
18

Why are there two high tides a day about 12 hours apart from each other?

A
Earth revolves around the Sun once during that time.
B
Earth rotates entirely on its axis once during that time.
C
The moon revolves around Earth once during that time.
D
The moon’s orbit is in line with Earth’s orbit twice a day.
19

What is the relationship between the rate at which molten material cools and a mineral's crystals?

A
The faster the cooling, the larger the crystals.
B
The slower the cooling, the larger the crystals.
C
The rate at which molten material cools does not affect crystal shape.
D
The rate at which molten material cools does not affect crystal size.

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