Heat, Light, and Sound Flashcard

Front

Which of the following is an example of heat conduction? Options: An air vent from a furnace sending hot air into the house., A metal cup heating up when hot water is poured into it., The sun melting the ice formed on a frosty lawn., Cool air sinking to the ground on a cold night.

Back

A metal cup heating up when hot water is poured into it.

Front

Which is the best activity to help keep a home cool in the summer?

Back

Open the windows during the day.

Front

In a room in the wintertime, where would you find the warmest air? Options: near the ceiling, near the floor, in the corners, by a window

Back

near the ceiling

Front

What happens to the light particles when light hits an uneven surface?

Back

They are scattered in many directions.

Front

Why do you see your image in a mirror?

Back

Light is reflected.

Front

Which of the following is an example of a light reflector? Options: the planet Mars, lightning, exploding fireworks, stars

Back

the planet Mars

Front

Why is the moon classified as a light reflector instead of a light producer?

Back

The moon is visible because light from the sun bounces off of it.

Front

What happens to a sound as the vibrations of an object increase in strength?

Back

The sound becomes louder.

Front

Which of the following might damage hearing?
Jet airplane taking off 160 decibels (Damage to hearing)
Chain saw 110 decibels
Hair dryer 90 decibels (Annoying to hearing)
Ringing telephone 80 decibels (Annoying to hearing)
Normal conversation 60 (Acceptable to hearing)
Options: hair dryer, conversations, ringing telephone, chain saw

Back

chain saw

Front

Which of the following would be annoying but not damaging to hearing? Options: whisper at 30 decibels, vacuum cleaner at 75 decibels, power lawn mower at 90 decibels, radio on high at 112 decibels

Back

power lawn mower at 90 decibels