Test - Unit 7

Question 1

A medicine ball has 10 J of energy and is thrown upward with a velocity of 2 m/s. What is its mass?
U7 C4

Answer 1

5kg

Question 2

A constant force of 2.0 N is used to push a 3.0kg box 4.0m across the floor. How much work is done?
U7 C4

Answer 2

8J

Question 3

Thermal energy is transferred to the solar panel in picture B by
U7 C3

Answer 3

Radiation

Question 4

The diagram to the right shows four locations in a temperature field. The temperature of each location is given in degrees Celsius. Heat energy will normally flow from:
U7 C3

Answer 4

Hot temp to low temp

Question 5

As the time required to do a given amount of work decreases, the power developed
U7 C4

Answer 5

Decreases

Question 6

The kinetic energy of an object increases as its ____ increases
U7 C2

Answer 6

Velocity

Question 7

Example shows thermal energy transfer by convection?

U7 C3

Answer 7

Tea kettle with boiling water

Question 8

Through which of the following will convection most likely occur?
U7 C3

Answer 8

Liquids and gases

Question 9

Examples that show conduction as a type of thermal energy transfer?
U7 C3

Answer 9

Iron on an ironing board

Frying pan on a stove

Question 10

The kinetic energy of an object increases as its _____ increases.
U7 C1

Answer 10

Velocity