Choose the correct alternative.

1. An incline saves energy, but increases the

speed.
distance.
color.
heat.
durability.

2. An incline is useful when

dropping a barrel into the water.
a football is kicked into the goal.
a piano is moved into a van.
a flag is hoisted.
a soda can is opened.

3. What kind of a road uses an incline?

a highway
a serpentine road
a railway
a fast road
a speedway

4. Wedges are useful

as weights.
as hammers.
as fillings.
for splitting.
for scraping.

5. Wedges can also be used

to attach things.
to detach things.
to clean things.
to level things.
to open things.

6. Which of the following devices makes use of a wedge?

a saw
a hammer
an eraser
a drill
a chisel

7. Which of the following devices is a wedge that has been twisted around an axle?

a nail
a knife
a screw chisel
a screw
a needle