In one word, what is sound created by?
How does sound travel?
If a sound is shrill and piercing, like a whistle, is it low-pitched or high-pitched?
Would a sound with rapid vibrations be low-pitched or high-pitched?
If a sound is deep and rumbling, is it low-pitched or high-pitched?
What do whales, dolphins and bats use to find their way around?
What is another word for echolocation?
Do sound waves of low-pitched sounds have a high or low frequency?
What scientific unit measures the volume of sound?
What word refers to sounds so low that humans cannot hear them?
When we speak, what do our vocal cords do?
What is the organ of hearing?
What is the best way to protect your ears if you must attend a loud concert?
True or False: The sound of a jet taking off is at or above the human pain threshold level for sound?
Loud sounds become dangerous at which exact decibel level?
True or False: Light is a type of energy.
A black 'hole' in the eye that lets light in is called....
True or False: White light can be split up into the colours of the rainbow.
A transparent cover that protects the eye is called....
Another word for the bending of light rays is....
Objects that let all the light through are....
Objects that do not let any light through are....
When sunlight passes through water droplets in the air, you might get this to form....
True or False: When light reflects off a mirror, it travels back on the same path it came.
This was used to tell time before watches were invented....
Vibrations
Sound travels in waves (sound waves).
High-pitched
High-pitched
Low-pitched
Echolocation
Sonar
Low frequency
Decibels (dB)
Subsonic
Vibrate
Ear
Wear ear plugs or sound-blocking headphones
True
130 dB
True
Pupil
True
Cornea
Refraction
Transparent
Opaque
Rainbow
False (Law of Reflection)
Sundial
