GRADE 6 REVIEW THIRD QUARTER

What kind of friction is exhibited by snow skier slowing to a stop after skiing down a mountain?

• Static friction
• Rolling friction
• Fluid friction
• Kinetic friction

A boy sits halfway down a grassy slope. What force stops him from sliding down.

• Inertia
• Magnetism
• Friction
• Gravity

On which surface will a toy sledge travel the least distance?

• carpet

• ice

• marble top

• polished wood

If you poured oil onto wooden surface, what will happen to the friction?

• Friction will increase
• Friction will remain the same
• Friction will become sticky
• Friction will decrease

Which of the following activities can increase friction?

• adding wheels to a cart

• spreading sand on icy roads

• squirting oil into door hinges

• waxing the underneath of skis

A battery possesses ____energy

• thermal energy
• chemical energy
• mechanical energy
• solar energy

A burning candle possesses ______energy.

• Kinetic
• sound

• Potential
• heat

Energy is needed in order to do work.

• true

• false

Friction increases the efficiency of a machine.

• True

• False

A pulley is an inclined plane that moves.

• True

• False