Assessment

Light helps us to see!

Light helps us to see, transparent, light is blocked by an opaque and makes shadow, common object to reflect light is mirror, which color absorbs all the color: black, Moon is non-luminous, Virtual image, Light can travel through vacuum.

ninja coder

Physics

Grade VII

10 plays

100 players

ninja coder

Physics

Grade VII

10 plays

100 players

Worksheet

15 Qs

1.
Multiple Choice
1 pts•30 s
Which form of energy helps us to see things?
Answer choices
Sound
Light
Heat
2.
Multiple Choice
1 pts•30 s
Which type of object does not allow light to pass through it?
Answer choices
Transparent
Translucent
Opaque
3.
Multiple Choice
1 pts•30 s
What is formed when light is blocked by an opaque object?
Answer choices
Shadow
Reflection
Image
4.
Multiple Choice
1 pts•30 s
Which object is commonly used to reflect light?
Answer choices
Lens
Mirror
Glass
5.
Multiple Choice
1 pts•30 s
What is the principle behind the formation of shadows?
Answer choices
Light bounces back from a smooth surface
Light bends when passing through water
Light travels in a straight line
6.
Multiple Choice
1 pts•30 s
Which color absorbs all the light that falls on it?
Answer choices
White
Black
Transparent
7.
Multiple Choice
1 pts•30 s
Which instrument uses mirrors to see around corners or over walls?
Answer choices
Periscope
Microscope
Stethoscope
8.
Multiple Choice
1 pts•30 s
What happens when light hits a smooth and shiny surface?
Answer choices
Light bends
Light scatters
Light reflects
9.
Multiple Choice
1 pts•30 s
Which of the following is a non-luminous body?
Answer choices
Moon
Sun
Stars
10.
Multiple Choice
1 pts•30 s
How many plane mirrors are used in a simple periscope?
Answer choices
1
2
3
11.
Multiple Choice
1 pts•30 s
What type of mirror is used in household bathrooms?
Answer choices
Convex mirror
Concave mirror
Plane mirror
12.
Multiple Choice
1 pts•30 s
What is a virtual image?
Answer choices
Image formed on a screen
Image not formed on a screen
Image that can be printed
13.
Multiple Choice
1 pts•30 s
Can light travel through a vacuum?
Answer choices
Yes
No
Only in darkness
14.
Multiple Choice
1 pts•30 s
Why do shadows form?
Answer choices
Because of temperature
Because light travels in a straight line
Because the object glows
15.
Multiple Choice
1 pts•30 s
What happens during reflection of light?
Answer choices
Light bends
Light disappears
Light bounces back