4G Science 2nd 9wks Review

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

Which surface typically has more friction: ice or sandpaper?

Back

Sandpaper applies more friction than ice.

Front

What happens to a hockey puck sliding on a wooden board compared to one on ice?

Back

The hockey puck sliding on a wooden board experiences more friction than the one sliding on ice.

Front

What is the effect of mass on falling time?

Back

Falling time does not change with the mass of a falling object.

Front

What is freeze-thaw weathering?

Back

Freeze-thaw weathering is a process where water seeps into cracks in rocks, freezes, expands, and causes the rock to break apart.

Front

How does ice affect boulders?

Back

Ice can break apart boulders through freeze-thaw weathering.

Front

What is the direction of the force of friction on a rolling golf ball?

Back

The force of friction acts opposite to the direction of the ball's motion.

Front

What is an example of an object that experiences less friction?

Back

A hockey puck that is in the air experiences less friction than one sliding on a surface.

Front

What is the relationship between surface texture and friction?

Back

Rough surfaces create more friction than smooth surfaces.

Front

What is the role of gravity in falling objects?

Back

Gravity pulls objects downward, causing them to fall.