Physical Science Fair Game

When light is reflected it...

• slows down.
• bounces back.
• bends in many directions.
• stops.

A student place a ruler into a glass of water and observes that the ruler looks broken. What is occuring?

• The force of the water has broken the ruler.
• The ruler is broken before it is put in the water.
• Water in the cup reflects light around the ruler in a different direction than the air.
• Light is refracted as it enter the water, making the ruler look broken.

Black materials ______________ more light energy than white materials.

• absorb
• reflect
• transmit

Brianna strikes a match to light a fire. Which of the following is true about the flames of the fire? 

• The flames of the fire use the Sun's light energy to produce heat. 
• The flames of the fire produce light energy. 
• The flames of the fire produce electric energy. 
• The flames of the fire do not produce any energy at all. 

When light passes through a prism it?

• Bounces back
• Reflects
• Refracts
• Absorbs

Which statement about heat energy is true?

• heat moves from cool things to warm things.
• Heat moves from warm things to cool things.

What are the most useful types of energy in a camp fire?

• chemical and sound
• heat and light
• electrical and motion
• sound and magnetic

Why does ice melt in your hand?

• Heat from my hand is warmer than the ice cube and the heat transfers to the ice cube and melts it.
• The ice is a colder temperature so it makes my hand feel cold.

What is frequency?

• the number of vibrations per second
• how high or low a sound is
• the loudness or softness of a sound
• the back and forth movement of matter

Measure of how high or low a sound is

• amplitude
• compression
• speed of sound
• pitch