Cumulative Exam — Cumulative exam Answers

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The bar graph shows monthly electric bill costs with and without solar panels.

Question illustration
A
Solar panels always work.
B
Solar panels cut the July electric bill in half.
C
Solar panels are not cost-effective every month.
D
Solar panels are not as cost-effective in winter as they are at other times of year.
42
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The image shows a world map.

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A
east of Africa
B
close to the equator
C
on the prime meridian
D
in the Northern Hemisphere
43

The diagram illustrates the water cycle.

Question illustration
A
Water cycles from a nonliving to a living part of the environment.
B
Water changes from a liquid to a gas.
C
Water changes from a gas to a liquid.
D
Water cycles from a living to a nonliving part of the environment.
44

Which action can humans take to reduce wave erosion?

A
build drainage systems
B
build houses near coastlines
C
build breakwaters in the ocean
D
reduce vegetation along coastlines
45

Which statement explains what similar fossils found on distant continents suggest about Earth’s history?

A
Animals have evolved over time.
B
The continents have moved over time.
C
Earth’s oceans had varying salt content through time.
D
There have been many animals on Earth that are now extinct.
46

How do rock types contribute to the rate of weathering?

A
Porous minerals weather faster.
B
Harder minerals break apart more easily.
C
Minerals that dissolve easily weather slower.
D
Permeable rocks have less chemical reactions.
47

Which materials are moved by runoff?

A
nutrients
B
vegetation
C
large rocks
D
paved surfaces
48

Which phrases describe S waves?

A
behave like a ripple
B
move through liquids only
C
are classified as primary waves
D
are known as a type of direct evidence
50

This is a map that shows hot spots around the world.

Question illustration
A
formed due to subduction
B
formed in the middle of a plate
C
formed at a divergent boundary
D
formed at a convergent boundary

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