Front

Force from surfaces rubbing together

Back

Friction

Front

Effect of gravity on objects

Back

Closer to Earth's center

Front

Objects thrown upward fall back due to...

Back

Gravitational force

Front

Activity that changes shape

Back

Making a pot from clay

Front

Direction of friction

Back

Opposite to the movement of the object

Front

Pulling force increases if...

Back

the object being pulled is smaller

Front

Ways to lessen friction

Back

Smoothening the surface

Front

Movement of bicycle wheel caused by...

Back

Muscular force

Front

Slippery floor

Back

Less friction

Front

Speed of falling object closer to Earth

Back

Bigger, Faster