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8th Grade Earth Science Mid-Term Flashcards | StudBud
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8th Grade Earth Science Mid-Term
8th Grade Earth Science Mid-Term
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Questions
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Answers
1
Which of these gases is not a green house gas?
water vapor
helium
methane
nitrous oxide
2
How much fresh groundwater is there in the world?
30.1%
0.9%
0.3%
68.7%
3
Which activity is least destructive to the environment?
Burning fossil fuels
Solar panels
Strip mining
factories
4
Describe nonrenewable resources.
Resources that once used up are gone forever
Resources that can never be used up
5
How is the Earth tilted during the winter?
Away from the sun
Perpendicular to sun
Toward the sun
Parallel to sun
6
How does the Earth's rotation/Coriolis Effect affect winds/currents in the Northern Hemisphere?
Turns clockwise
Turns counter-clockwise
7
What are the driving forces of deep ocean currents?
animal life
Differences in water Salinity
Differences in density and Temperature
Wind
8
What is point source pollution?
Pollution that its source can be identified
Pollution whose source cannot be easily identified
Pollution that gets to the point!
9
How much atmospheric freshwater is there in the world?
0.9%
30.1%
0.3%
68.7%
10
Why are the equatorial regions warmer than the polar regions?
The equator is in the middle of the Earth
Received direct sunlight during all seasons
Mostly islands
There are palm trees
11
All are examples of renewable resources except one. . .
fossil fuels
solar power
hydro-electric power
wind energy
12
What is non-point source pollution?
Pollution whose source cannot be easily identified.
Pollution whose source can be identified.
Pollution that does not get to the point!
13
What causes the seasons on Earth?
Earth's Rotation
Earth's Revolution
Earth's Tilt
Earth's Core
14
What happens to an ocean current when it hits a continent?
it speeds up
it moves toward the poles
it changes direction
it moves away from poles
15
What region receives daylight 24 hours a day during the summer time?
all the same
Mid latitudes
Tropic
Polar
16
What region receives the greatest amount of sunlight/energy throughout the year?
tropic
all the same
Mid latitudes
Polar
17
How does the Earth's rotation/Coriolis Effect affect winds/currents in the Southern Hemisphere?
Turns counter-clockwise
Turns clockwise
18
What percentage of freshwater is in the form of a glacier?
0.3%
68.7%
0.9%
30.1%
19
What are the driving forces of surface currents?
Wind
Water Temperature
Water Density
Water Salinity
20
How is the Earth tilted during Fall/Spring?
Parallel to the sun
Away from the sun
Perpendicular to the sun
Toward the sun
21
Who does the Gulf Stream impact climates near England?
It brings cold water and weather
It brings storms and rain
It brings drought
It brings warm water and weather
22
How much fresh surface water is there in the world?
68.7%
30.1%
0.9%
0.3%
23
Describe a renewable resource?
Resources that once used up are gone forever
Resources that can never be used up
24
All are examples of the BMP (best management practices) for a parking lot except 1.
Lighting/Parking lot lights
runoff/retention ponds
vegetation/plants/grass
curbs/drains
25
All of these activities cause an increase in Carbon Dioxide expect one. . .
Riding your Bike
Factory Pollution
Deforestation
Burning of Fossil Fuels
26
These conditions are needed for algae blooms to grow except one. . .
warm temperatures
nutrients
lakes with a tide
standing water
27
How is the Earth tilted during the summer?
Perpendicular to sun
Toward the sun
Away from the sun
Parallel to sun
28
All of these cause algae blooms except one. . .
city runoff
mowing you lawn
nitrates from soap
fertilizer use
