WorksheetsLesson 4 vocab
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What is the definition of a sound wave
a)
a sound
b)
a longitudinal wave that can travel only through matter.
c)
a reflection
d)
something that emits light
2.
A light ray is a narrow beam of light that travels in a zig-zag line
a)
true
b)
false
3.
Something that emits light
a)
light source
b)
light ray
c)
transparent
4.
transparent
a)
if it allows most of the light that strikes it to pass but forms a blurry image
b)
forms a clear image
5.
A material is -------if light does not pass through it
a)
transparent
b)
translucent
c)
opaque
6.
The iris is the colored part of the eye
a)
true
b)
false
7.
The -----is an opening into the interior of the eye at the center of the iris
a)
pupil
b)
lens
c)
iris
d)
none of the above
8.
The retina is a layer of special light -sensitive cells in the back of the eye
a)
true
b)
false
9.
What light ray reflects better on a banana
a)
red
b)
orange
c)
blue
d)
yellow
10.
A ----- is any reflecting surface that forms an image by regular reflection
a)
lens
b)
mirror
c)
cornea
d)
retina
100 %
