Big Idea 10 & 11 Quiz Review

 Ryan rubs two sticks together quickly. When he stops rubbing the sticks, he notices that they are warm to touch where he rubbed them. Which type of energy has been produced?

• sound energy
• electrical energy
• light energy
• heat energy

2. WHICH OF THE FOLLOWING IS A SOURCE OF LIGHT?

• the moon

• our eyes

• fire

• a mirror

Fireworks are popular during celebrations. They light up the night sky and sometimes shake the ground with their explosions. The explosion noises are an example of what type of energy?

• electrical energy

• light energy

• mechanical energy

• sound energy

When sunlight reaches Earth, it can be reflected, bent (refracted), or absorbed. Which would most likely bend (refract) light?

• grass

• ocean

• mud

• snow

Kaiden orders some hot chocolate from Starbucks. The cup is very hot. Which material would be best to wrap around the cup to prevent his hand from getting too hot?

• foam

• plastic wrap

• paper

• aluminum foil

Which action creates the most friction and heat?

• Gently brushing chalk onto a piece of paper.

• Rubbing your hands together multiple times.

• Rubbing soap onto your hands.

• Rubbing sunscreen onto your legs.

A music teacher strikes a key on the piano. Drew hears a high-pitched sound. Which of the following statements describes what most likely happened inside the piano to produce the sound that Drew heard?

• The string that was played must have broken. 

• One string must have vibrated quickly to produce the sound.

• One string must have vibrated slowly to produce the sound.

• Two or more strings must have vibrated together to produce the sound.

Hot-air balloons rise when a burner, positioned under the opening of the balloon, uses the gas propane to create a blast of fire. What form of energy causes a hot-air balloon to rise into the air? 

• mechanical energy

• light energy

• heat energy

• electrical energy

When you pull a door open, what type of energy is being used?

• light energy
• sound energy
• mechanical energy
• heat energy

If the radio is on in the car, what form of energy allows you to hear the music?

• light energy
• sound energy
• mechanical energy
• heat energy