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Worksheets7th grade unit 2 review
Total questions: 28
Worksheet time: 15mins
Name
Class
Date
1.
On a cold morning, Pierre observed that the grass looked wet. Which term best describes what Pierre observed?
a)
dew
b)
fog
c)
mist
d)
snow
2.
As water changes state, the water either absorbs or releases energy. Which of these changes of state would involve water absorbing energy?
a)
condensation
b)
deposition
c)
evaporation
d)
freezing
3.
A weather report stated that rain was likely with some snow and hail also possible. Which statement is not true about rain, snow, and hail?
a)
they all form in clounds
b)
they are all precipitation
c)
they are all the same state
d)
they are all made of water
4.
Runoff is most like which of the following?
a)
a puff of steam
b)
a flowing stream
c)
a cloud in the sky
d)
an invisible form of water
5.
Which of the following is not a way that water reaches Earth’s atmosphere?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
6.
What causes convection currents to form in the oceans?
a)
surface winds
b)
the Coriolis effect
c)
continental deflection
d)
differences in water density
7.
What role does heat play in the formation of convection currents?
a)
When water loses heat, it becomes denser and sinks.
b)
When water gains heat, it becomes denser and sinks.
c)
When water loses heat to cooler water, the cooler water becomes denser and sinks.
d)
When water gains heat, it dissolves more solids and gases, becomes denser, and sinks.
8.
Which of the following movements of ocean water has the greatest direct effect on the growth of producers?
a)
upwelling
b)
deep current
c)
surface current
d)
convection current
9.
Which statement correctly describes a difference between gaseous and liquid water?
a)
Only liquid water takes the shape of its container.
b)
Only water vapor takes the shape of its container.
c)
Only liquid water expands to fill the available space.
d)
Only water vapor expands to fill the available space.
10.
What percentage of water on Earth is salt water?
a)
55
b)
72
c)
84
d)
97
11.
Which of the following is an example of cohesion?
a)
water transforming into vapor
b)
water soaking into a paper towl
c)
water slowly dissolving rocks over time
d)
water forming droplets during a rainstorm
12.
Water is a polar molecule. This allows water to act as a solvent. What is a polar molecule?
a)
a molecule that faces either north or south
b)
a molecule with two ends that have a negative charge
c)
a molecule that will not stick to any other molecule because it has no charge
d)
a molecule that has one end with a positive charge and one end with a negative charge
13.
Which term is used to identify the area of land that is drained by a river system?
a)
a divide
b)
an aquifer
c)
a tributary
d)
a watershed
14.
Which term is used to refer to the path that a river or stream takes?
a)
divide
b)
channel
c)
gradient
d)
tributary
15.
Which of the following is a measure of the amount of open spaces between the particles of rock and soil?
a)
porosity
b)
saturation
c)
permeability
d)
precipitation
16.
Which of the following most directly prevents erosion in a watershed?
a)
soil type
b)
plant life
c)
sediment transport
d)
agricultural irrigation
17.
Which of the following would increase the effect of erosion in a watershed?
a)
floodplains
b)
sleep slope
c)
lack of soil
d)
abundant plant life
18.
Humans can cause different types of environmental pollution. Which type of pollution is directly caused by humans dumping the remains of dead organisms into bodies of water?
a)
air pollution
b)
biological pollution
c)
chemical pollution
d)
thermal pollution
19.
pH is measured on a scale of 1-14 with water being neutral at 7. What pH is considered acidic?
a)
greater than 7
b)
less than 7
c)
exactly 7
d)
none of the above
20.
Which of these statements is true of acid rain?
a)
acid rain is used for irrigation
b)
acid rain has a pH greater than 5.7
c)
acid rain is precipitation that causes erosion
d)
acid rain is precipitation that is more acidic than normal
21.
The term potable is sometimes used to describe water. Which of these words has the same meaning as potable?
a)
acidic
b)
contaminated
c)
drinkable
d)
turbidity
22.
Remediation is the act of reversing environmental damage. Why is non-point source water pollution difficult to remediate?
a)
Non-point source water pollution is easy to remediate.
b)
Non-point source water pollution is always very severe.
c)
Non-point source water pollution comes from only one source that can be difficult to pinpoint.
d)
Non-point source water pollution comes from multiple sources, which can be difficult to pinpoint.
23.
A ________________________ is the area of land that is drained by a river system.
a)
aquifer
b)
watershed
c)
tributary
d)
channel
24.
Any form of water that falls to Earth’s surface from the clouds is called ________________________.
a)
evaporation
b)
precipitation
c)
transpiration
d)
sublimation
25.
The continuous movement of water between the atmosphere, the land, the oceans, and living things is called the ________________________.
a)
precipitation
b)
convection currents
c)
water cycle
d)
energy flow
26.
The change in state from solid to gas, skipping the liquid state is called __________?
a)
evaporation
b)
sublimation
c)
condensation
d)
transpiration
27.
Plants put water into the atmosphere by a process called __________.
a)
evaporation
b)
condensation
c)
precipitation
d)
transpiration
28.
Which process occurs when water dropplets form on a cold glass of soda?
a)
condensation
b)
sublimation
c)
evaporation
d)
deposition
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