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Study Guide 2
Test Description: Study guide for CBA #2
Instructions: Answer all questions to get your test result.
1) Which of the following always causes change in speed, direction, or both?
A
Unbalanced forces
B
Either balanced or unbalanced forces
C
Any combination of forces
D
Balanced forces
2) What happens if the forces on an object are unbalanced?
A
Either balanced or unbalanced forces
B
The forces will be zero
C
Its motion will change
D
Its motion will not change
3) It takes kira 36 seconds to jog to a store that is 72 meters away. What is her average speed in meters per second?
A
32 m/s
B
2 m/s
C
3 m/s
D
22 m/s
4) A cheetah starts running and covers a distance of 200 meters in 10 seconds. What is the cheetah\'s average speed?
A
250 meters per second
B
0.05 meters per second
C
20 meters per second
D
2000 meters per second
5) A ramp is an example of which type of machine
A
A wedge
B
An inclined plane
C
An axle
D
A pulley
6) Hot air is seen rising from the pavement on a hot summer day. Which of the following is this an example of?
A
Radiation
B
Thermal Conduction
C
Thermal insulation
D
Convection
7) What is the rolling motion of boiling water an example of?
A
Convection
B
Radiation
C
Insulation
D
Conduction
8) As a spoon in a bowl of hot soup becomes warmer, by which process is heat being transferred to the spoon?
A
Conduction
B
Direct Contact
C
Convection
D
Radiation
9) Which device converts chemical energy into electrical energy?
A
Light Bulb
B
Switch
C
Battery Cell
D
Toaster
10) A hair dryer converts what type of energy into thermal energy?
A
Chemical
B
Electrical
C
Potential
D
Kinetic
*select an answer for all questions
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