U7 Energy Flashcards
1
Q
Conduction is the transfer of heat energy by_____.
A
direct particle contact
C3
2
Q
The kinetic energy of an object increases as its _______ increase.
A
velocity
C1
3
Q
Which picture shows thermal energy transfer by convection?
A
a kettle on the stove boiling water
C3
4
Q
A constant force of 2 N is used to push a 3 kg box 4 m across the floor. How much work is done?
A
8 J
C4
5
Q
As the tome to do a given amount of work decreases the power developed_____.
A
increases
C4
6
Q
Which picture shows the same type of thermal energy transfer?
A
a pan on a turned on stove
a plugged in iron on an ironing board
C3
7
Q
Velocity must include a ___________.
A
speed and direction
U6
