Open Sci Ed

A __system is one in which no matter can enter or exit.

• locked

• solid

• closed

• tight

Tags

NGSS.MS-LS2-3

Amplitude is the

• distance from the starting position to a peak or valley

• the number of peaks or valleys in one second

• the number of waves in one second

• How high you are in the mountains

Tags

NGSS.MS-PS4-1

Which structure sends the signal to the brain when you hear a sound?

• eardrum

• auditory canal

• auditory nerve

• cochlea

The sound source from the truck speakers vibrates the particles/molecules in the air causing the window to shake.

• True

• False

Tags

NGSS.MS-PS3-5

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Pitch is

• the music box

• the number of vibrations of the sound

• the low point on a wave

• the highness or lowness of a sound

Sound can travel through (choose all that apply)

• empty space with no matter

• gases

• liquids

• solids

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Frequency is

• something very odd

• the distance from starting position to a peak or valley

• the number of waves in one second

• the number of peaks or valleys in one second

Tags

NGSS.MS-PS4-1

Waves of bigger amplitude transfer more energy than waves with less amplitude.

• True

• False

Tags

NGSS.MS-PS4-1

Hearing loss is caused when one of the structures in your ear is healed.

• True

• False

Which of these three animals—an elephant, a human, or a dog—can hear the lowest pitch sounds?

• dog

• elephant

• human