Evaporation and Energy Sources

Front

What is evaporation?

Back

Evaporation is the process by which liquid water turns into water vapor (gas) when it is heated.

Front

What is friction?

Back

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

Front

What type of surface creates the most friction?

Back

Rough surfaces create the most friction.

Front

What is the effect of wind on a bike rider's speed?

Back

A bike rider goes the slowest when the wind is blowing in their face.

Front

What is force?

Back

Force is a push or pull on an object that can cause it to move or change its motion.

Front

What type of surface requires the most force to move an object?

Back

Carpet requires the most force to move an object compared to tile.

Front

What are equal forces?

Back

Equal forces are forces that are balanced and do not cause a change in motion.

Front

What are unequal forces?

Back

Unequal forces are forces that are not balanced and can cause an object to move or change direction.

Front

What is a magnet?

Back

A magnet is an object that produces a magnetic field and can attract or repel certain materials.

Front

What size object is easiest for a magnet to hold?

Back

A small object is easiest for a magnet to hold.