Life and Earth's Crust — Unit test Answers

0 verified answers2 views
1
Free Preview

Natural disasters can have positive effects on an ecosystem.

A
T
B
F
2
Free Preview

Which of the following predictions about global climate change is directly related to an increase in the burning of fossil fuels?

A
increased extreme weather
B
decreased food supply
C
global warming
D
falling sea levels
3

Which of the following is not a consequence of the onset of early spring events?

A
flowering
B
acidic ocean water
C
fruit ripening
D
hatching eggs
4

Which of the following is(are) non-technological ways of improving air quality?

A
using public transportation
B
building wind turbines
C
turning lights off when leaving a room
D
both a and c
5

Which of the following best describes the impact of glaciers upon the surface of the earth?

A
Ice buried continents under a few hundred feet of ice.
B
Glaciers scraped across the surface and altered landscapes and the course of rivers.
C
The passage of glaciers created new ecosystems.
D
All of the above.
6

Greenhouse gases are best described as _______.

A
the result of fossil fuel use
B
gases that cause the greenhouse effect
C
carbon dioxide and methane
D
gases that trap energy from the sun in Earth’s atmosphere
7

Which of the following theories concerning global climate change is the most widely accepted?

A
Changes in the global climate will lead to an increase in extreme weather and flooding.
B
Global climate is changing due to burning of fossil fuels and deforestation.
C
Global climate change will happen rapidly.
D
Extra carbon dioxide and global warming will be beneficial.
8

Air pollution only occurs as a result of human activity.

A
T
B
F
9

Which two layers of the atmosphere are responsible for the majority of solar radiation absorption?

A
stratosphere and troposphere
B
stratosphere and thermosphere
C
troposphere and thermosphere
D
troposphere and mesosphere
10

Where is over 95% of incoming ultraviolet radiation absorbed?

A
the stratosphere
B
the mesosphere
C
the troposphere
D
the thermosphere
11

Which of the following is not a health risk associated with a depleted ozone layer?

A
respiratory illness
B
skin cancer
C
cataracts
D
all of the above
12

Which of the following would most likely utilize a particulate control device?

A
a vacuum cleaner
B
a factory smokestack
C
a laundry dryer
D
all of the above
13

Ozone forms near the ground when pollutants from cars are exposed to UV radiation and oxygen. This is an example of a _______.

A
primary pollutant
B
secondary pollutant
C
tertiary pollutant
D
none of the above
14

Which of the following groups of people would be the least affected by air pollution?

A
people with asthma
B
infants
C
teenagers
D
the elderly
15

Which of the following would not cause habitat change?

A
building a dam on a river
B
a hurricane
C
introducing new hiking trails
D
none of the above

Did you find these answers helpful?