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4th Six Weeks Review
Test Description: Test review
Instructions: Answer all questions to get your test result.
1) Which is true about an object being pulled behind a person?
A
in moves slower than the person, and it moves in a different direction
B
It moves at the same speed, and it moves in the same direction as the person.
C
it moves at the same speed but in a different direction
D
it moves faster than the person, and in the same direction
2) A skydiver jumps from an airplane and opens his parachute. At some point during his fall, the downward force of gravity on the skydiver is equal to the upward force of drag on the parachute. Which best describes the motion?
A
the skydiver is moving at a constant speed
B
the skydiver is decreasing in speed
C
The skydiver is gaining speed downward.
D
the skydiver is moving from side to side
3) A bus traviels 20 km in 30 minutes. What is the average speed of the bus?
A
20 km/h
B
40 km/h
C
50 km/h
D
30 km/h
4) Jermaine and Josh observed an anthill for their science project. They observed that an ant moved 45 mm in 85 seconds. How fast was the ant moving?
A
.53
B
4225
C
1.8
D
130
5) Kinetic and potential energy are both measures of the amount of:
A
work an object can do
B
time an object can exist
C
mass an object can have
D
density an object can have
6) Wind, moving water, falling rocks, and roller skating children are all examples of:
A
potential energy
B
kinetic energy
C
chemical energy
D
atomic energy
7) Potential energy is measured in joules. Kinetic energy is measured in:
A
degrees
B
meters
C
joules
D
seconds
8) A block of wood has a volume of 8cm3 and a mass of 4 g. What is the density of the block of wood?
A
4
B
2
C
32
D
.5
9) A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 g and a volume of 2.2 cm3. What is the density of the mineral sample?
A
6.7 g/cm3
B
.15 g/cm3
C
13 g/cm3
D
32 g/cm3
10) Why does the baseball move when the bat strikes it?
A
contact with the ball releases the bat's potential energy
B
contact with the ball creates and unbalanced force affecting the bat
C
contact with the bat creates an unbalanced force affecting the ball.
D
contact with the bat releases the ball's potential energy
*select an answer for all questions
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