Kuis Pengetahuan Cahaya dan Bunyi

Light travels in a line ...

• circle

• straight

• random

• triangle

Objects can be seen by our eyes because ...

• objects reflect light

• objects absorb light

• objects emit sound

• objects do not move

Our shadow is visible in the mirror because light ...

• is absorbed by the mirror

• is reflected by the mirror

• is destroyed by the mirror

• is bent by the mirror

Light cannot penetrate objects ...

• clear

• transparent

• cloudy

• dark and solid

The function of the retina in the eye is ...

• to regulate the light that enters

• to capture images and send them to the brain

• to reflect light

• to protect the lens

The pupil in the eye functions to ...

• capture light

• reflect light

• regulate the amount of light that enters

• reflect the image

The lens of the eye functions to ...

• protect the eyeball

• capture light

• focus images on the retina

• keep the eye moist

Sound is produced by objects that ...

• are still

• are solid

• vibrate

• are wet

The larger the amplitude of the vibration, the sound produced ...

• is higher

• is smaller

• is louder

• is softer

Frequency is ...

• the number of vibrations per second

• the strength of sound

• the direction of sound

• the height of an object