5th Science Benchmark, 1st Semester

Front

What is the process of energy transformation from electrical to mechanical to sound?

Back

An example is a pencil sharpener plugged into a wall outlet, which transforms electrical energy into mechanical energy to sharpen a pencil, and then produces sound.

Front

What property of light is observed when it bends as it enters water?

Back

Light is refracted as it moves from one medium to another medium.

Front

What is the boiling point of water in degrees Celsius?

Back

100° C

Front

What type of energy travels in a straight line?

Back

Light energy.

Front

What is a solution?

Back

A solution is a mixture of one or more substances dissolved evenly into another substance.

Front

What happens to light when it passes from air into water?

Back

It refracts, or bends.

Front

What is the definition of refraction?

Back

Refraction is the bending of light as it passes from one medium to another.

Front

What is the freezing point of water in degrees Celsius?

Back

0° C

Front

What is an example of mechanical energy?

Back

A moving car or a spinning fan.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter.