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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
Any combination of forces
B
Unbalanced forces
C
Either balanced or unbalanced forces
D
Balanced forces
2) What happens if the forces on an object are unbalanced?
A
The forces will be zero
B
Either balanced or unbalanced forces
C
Its motion will not change
D
Its motion will 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
3 m/s
B
2 m/s
C
32 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
2000 meters per second
C
0.05 meters per second
D
20 meters per second
5) A ramp is an example of which type of machine
A
An axle
B
An inclined plane
C
A pulley
D
A wedge
6) Hot air is seen rising from the pavement on a hot summer day. Which of the following is this an example of?
A
Thermal Conduction
B
Thermal insulation
C
Convection
D
Radiation
7) What is the rolling motion of boiling water an example of?
A
Conduction
B
Insulation
C
Radiation
D
Convection
8) As a spoon in a bowl of hot soup becomes warmer, by which process is heat being transferred to the spoon?
A
Radiation
B
Direct Contact
C
Conduction
D
Convection
9) Which device converts chemical energy into electrical energy?
A
Light Bulb
B
Battery Cell
C
Switch
D
Toaster
10) A hair dryer converts what type of energy into thermal energy?
A
Electrical
B
Potential
C
Chemical
D
Kinetic
*select an answer for all questions
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