Test - Energy

Question 1

What units does .....
Acceleration 
Power
Q (change in thermal energy)
Velocity

Answer 1

Acceleration = m/s^2
Power = j/s or w
Q= J
Velocity = m/s
U7C4 pg 27, U7C3 pg 19, U6C2 pg 11, U6C1 pg 3

Question 2

When an object is dropped what happens to potential and kinetic energy as it falls?

Answer 2

GPE goes down, KE goes up

U7C2 pg 11

Question 3

What two things does velocity always have

Answer 3

Speed and direction

U6C1 pg 3

Question 4

The picture below shows a person swinging a baseball bat, starting at point A. The gravitational potential energy of the bat would be the greatest at

Answer 4

Point A which is at the highest point

U7C2 pg 11

Question 5

Through which of the following will convection most likely occur?

Answer 5

liquids and gases

U7C3 pg 19

Question 6

When oil is burned to produce electricity, the electrical energy produced is less than the potential energy in the oil. Which best explains this observation?

Answer 6

Some of the potential energy in oil is converted into forms of energy other than electricity.

U7C1 pg 3

Question 7

Give examples of conduction thermal energy transfer?

Answer 7

Stove and frying pan
Iron and ironing board

U7C2 pg 11

Question 8

Energy Transformations: A windmill would be an example of

Answer 8

Kinetic to electrical

U7C2 pg 11

Question 9

The picture below shows a person swinging a baseball bat, starting at point A. The kinetic energy of the bat would be the greatest at

Answer 9

Point C

U7C2 pg 11

Question 10

When you hold an ice cube, your hand feels cold because

Answer 10

heat flows from your hand to the ice cube

U7C3 pg 19