Sci Lesson 2 Worksheet

When a guitar string is plucked, sound is produced by

• the size of the guitar

• the metal on the guitar

• the wood on the guitar

• the vibrations of the string.

A student listens to a song on his radio. The sound the student hears is best explained by:

• the radio producing sound waves that travel through the air to the student’s ears

• the radio sending light waves to the student’s eyes

• the student hearing the song through vibrations in the ground

• the student seeing the song as colors in the air

What is the correct statement about sound?

• Sounds are fluids that travel through air.

• Sounds are waves that travel through matter.

• Sounds are gases that transform into vibrations.

• Sounds are forms of energy that are converted from light.

Which of these everyday occurrences results from waves of vibrations in the air?

• Water turns to ice in a freezer.

• Two students have a conversation.

• A pan gets hot when placed on a gas stove.

• A room lights up when a light bulb is switched on.

What is the volume of sound the student hears when the distance from the piano is 2 meters?

• The volume will be the loudest at the closest distance.

• The volume will be the same at any distance.

• The volume will be the loudest at the farthest distance.

• The volume will be zero at 2 meters.

What is the volume of sound the student hears when the distance from the piano is 6 meters?

• The volume will be quieter than at 2 meters but louder than at 10 meters.

• The volume will be the same as at 2 meters.

• The volume will be louder than at 2 meters.

• The volume will be the same as at 10 meters.

What is the volume of sound the student hears when the distance from the piano is 10 meters?

• The volume will be the quietest at the farthest distance.

• The volume will be the loudest at the farthest distance.

• The volume will not change with distance.

• The volume will be the same as at 1 meter.

A sound wave travels through the air and hits a glass of water. In what way will the sound wave change as it moves from the air into the glass?

• It will travel faster.

• It will travel slower.

• It will become louder.

A student learned that sound waves travel at different speeds through different materials and sound waves cannot travel through outer space at all. Which best explains why sound waves cannot travel through space?

• A. Space is too cold.

• B. Gravity is too strong.

• C. Particles of matter are too far apart.

• D. Energy from the Sun is too powerful.

People can use a special dog whistle to call a dog. The person blowing the whistle cannot hear it. Why can’t the person hear the dog whistle?

• A. Sound waves have to travel a distance before they can be heard.

• B. The sound from the whistle is too soft for a person to hear.

•           Sound waves have to travel a distance before they can be heard.