Unit 4: Test Answers

25 verified answers6 views
41
Free Preview

A wheelbarrow can be used to help lift a load, such as a pile of dirt, and then push the load across a distance.

Question illustration
A
a pulley and an inclined plane
B
a wheel and axle and a lever
C
a pulley and a wheel and axle
D
a lever and a wedge
42
Free Preview

Two metal blocks that have slightly different temperatures are placed next to one another. After five minutes, they both have lower but equal temperatures. According to the law of conservation of energy, what most likely happened?

A
Energy was created inside the blocks.
B
Energy was destroyed inside the blocks.
C
Energy was absorbed into the blocks from outside the system.
D
Energy was transferred from the warmer block to the cooler block.
43

Which simple machine is best used to split apart an object?

A
a screw
B
a lever
C
a wedge
D
a pulley

Did you find these answers helpful?