Quiz 1 revision second term grade 4

Light wave is a transverse wave

• True

• False

Light waves travel as ………….

• Rays

• Circles

• Squares

• Curved lines

Light can reflect only

• True

• False

Light waves can’t travel without a medium.

• True

• False

Light rays can refract (bend) we they enter a new medium

• True

• False

The human eye works as a ………,,,,

• System

• Cell

• Organ

• Tissue

………… is a group of parts that work together as a whole.

• System

• Cell

• Tissue

…………….. is the black hole in the center of the eye that moves to let more or less light in

• Pupil

• Retina

• Lens

Is the part of the eye that bends and focus light into images

• Pupil

• Retina

• Lens

Connects the eye to the brain

• Pupil

• Retina

• Optic nerve