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4th Six Weeks Review 2
Test Description: Test review
Instructions: Answer all questions to get your test result.
1) What will happen to a biker's speed while a strong wind blows against him?
A
his speed will double due to the second force being applied.
B
his speed will remain the same as he is applying the same force to the pedals.
C
his speed will increase due to stronger wind currents
D
his speed will decrease since the wind is blowing towards him
2) To determine the distance to a storm, you count the seconds it takes to hear thunder after seeing the lightning and divide by 5. If it takes 15 seconds for the thunder to reach an observer 3 miles away, how fast is the thunder traveling?
A
5.0
B
2.0
C
.2
D
.5
3) Both the kinetic and potential energy of an object can be:
A
recognized as forms of spent energy
B
measured in pounds
C
calculated using mathematical formulas
D
understood as the product of an object's mass and volume
4) A cyclist works hard to reach the top of a hill and then coasts down the other side. Which statement best explains why the cyclist does NOT nee to work as hard when he travels downhill?
A
there is less friction between the road and the bike as it moves downhill
B
kinetic energy is stored in the bicycle
C
potential energy is converted into kinetic energy as he moves downhill
D
no energy is lost as heat when the cyclist rides downhill
5) A boy has three cubes made of different materials. All the cubes have the same dimensions. Which of the following is true?
A
the colors of all of the cubes are the same
B
the masses of all the cubes are the same
C
the cube that is the least dense has the lowest temperature
D
the cube that is the most dense has the largest mass.
6) What is a balls speed when rolling down a hill if it travels 10m and takes 50 seconds to get there.
A
.5
B
5.0
C
10.0
D
.2
7) If a ball travels 30m, and is moving at 15 m/s, how many seconds did it take for the ball to travel 30 m?
A
1.5 s
B
2 s
C
.5 s
D
1 s
8) At what point is potential energy greatest on a roller coaster?
A
halfway up the hill
B
at the bottom of a hill
C
halfway down the hill
D
at the top of the hill
9) Why does a train need to be at top speed to go up a hill?
A
the trains potential energy helps it to go up
B
the train needs momentum to make it to the top
C
all the above
D
the train's kinetic energy help is to go up
10) Liquid A has a mass of 11.8g and volume of 15.5ml, Liquid B has a mass of 17.3g and a volume of 29.8ml, Liquid C has a mass of 15.7g and a volume of 19.4ml and Liquid D has a mas of 21.4g and a volume of 27.4ml. Which liquid has the largest density?
A
Liquid D
B
Liquid B
C
Liquid A
D
Liquid C
*select an answer for all questions
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