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WorksheetsScience Flash Review
Total questions: 26
Worksheet time: 24mins
Name
Class
Date
1.
a)
Mountain
b)
Valley
c)
Plateau
d)
Plain
2.
The variable that is being tested or changed
a)
independent variable
b)
dependent variable
c)
control variable
3.
The variable that is being measured
a)
independent variable
b)
dependent variable
c)
control variable
4.
the variable that is observed at the end of the experiment
a)
independent variable
b)
dependent variable
c)
control variable
5.
Solar energy is energy from the _____________.
a)
Moon
b)
Stars
c)
Wind
d)
Sun
6.
Wind energy is a ____________ resource.
a)
nonrenewable
b)
renewable
c)
hydroelectric
d)
solar
7.
_____________ power is electricity produced by flowing water.
a)
Solar
b)
Wind
c)
Hydroelectric
d)
water
8.
Thermal energy from Earth's interior is called____________ energy
a)
geothermal
b)
microthermal
c)
potential
d)
action
9.
Coal is a __________ energy resource.
a)
Renewable
b)
Nonrenewable
10.
What is an example of a pulley?
a)
slide
b)
flag pole
c)
ax
d)
chapstick
11.
What is an example of a screw?
a)
arm
b)
ax
c)
light bulb
d)
ramp
12.
What is a screw?
a)
means attracted to a magnet
b)
an inclined plane that is wrapped around an axle
c)
stiff bar that rests on a fulcrum
d)
made of 2 inclined planes that are back to back
13.
What is a lever?
a)
made of 2 inclined planes that are back to back
b)
means attracted to a magnet
c)
stiff bar that rests on a fulcrum
d)
made of 2 inclined planes that are back to back
14.
What is a wheel and axle?
a)
wheel that turns on a post
b)
flat surface that is higher at one end
c)
made from two or more simple machines
d)
uses a wheel and rope to lift a load
15.
True or False:
Gravity affects all objects on Earth.
Gravity affects all objects on Earth.
a)
True
b)
False
16.
a)
Wedge
b)
Inclined Plane
c)
Lever
d)
Screw
17.
a)
Inclined Plane
b)
Wedge
c)
Screw
d)
Lever
18.
Plants prevent soil erosion by-
a)
holding dirt in place with their roots
b)
providing food for herbivores
c)
the process of photosynthesis
d)
releasing water into the atmosphere through transpiration
19.
What is the major cause of weathering and erosion?
a)
wind
b)
ice
c)
glaciers
d)
moving water
20.
What is sediment?
a)
the process of rocks being broken down and carried away
b)
bits of rock, sand, and silt caused by the weathering of rocks
c)
the top layer of the soil
d)
decaying plant or animal material
21.
The process by which small pieces of rocks and soil are carried away to new locations is called...
a)
deposition
b)
erosion
c)
weathering
d)
faults
22.
The type of formation shown is at the southern end of the Mississippi river. What is it called?
a)
coastal erosion
b)
a delta
c)
a loess
d)
sand dunes
23.
The summary at the end of an experiment that explains the results.
a)
conclusion
b)
procedures
c)
materials
d)
responding variable
24.
Testing a hypothesis often involves a(n):
a)
answer
b)
experiment
c)
problem
d)
safety check
25.
Which step asks scientists to make a guess or prediction about what might happen in their experiment?
a)
Problem
b)
Research
c)
Hypothesis
d)
Conclusion
26.
Should experiments be repeated over and over to see if the results are the same each time?
a)
yes
b)
no
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