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
Grade7
10 Plays
100 Participants
1.
Multiple Choice
1 pts•30 sAnswer choicesWhich form of energy helps us to see things?
Sound
Light
Heat
2.
Multiple Choice
1 pts•30 sAnswer choicesWhich type of object does not allow light to pass through it?
Transparent
Translucent
Opaque
3.
Multiple Choice
1 pts•30 sAnswer choicesWhat is formed when light is blocked by an opaque object?
Shadow
Reflection
Image
4.
Multiple Choice
1 pts•30 sAnswer choicesWhich object is commonly used to reflect light?
Lens
Mirror
Glass
5.
Multiple Choice
1 pts•30 sAnswer choicesWhat is the principle behind the formation of shadows?
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 sAnswer choicesWhich color absorbs all the light that falls on it?
White
Black
Transparent
7.
Multiple Choice
1 pts•30 sAnswer choicesWhich instrument uses mirrors to see around corners or over walls?
Periscope
Microscope
Stethoscope
8.
Multiple Choice
1 pts•30 sAnswer choicesWhat happens when light hits a smooth and shiny surface?
Light bends
Light scatters
Light reflects
9.
Multiple Choice
1 pts•30 sAnswer choicesWhich of the following is a non-luminous body?
Moon
Sun
Stars
10.
Multiple Choice
1 pts•30 sAnswer choicesHow many plane mirrors are used in a simple periscope?
1
2
3
11.
Multiple Choice
1 pts•30 sAnswer choicesWhat type of mirror is used in household bathrooms?
Convex mirror
Concave mirror
Plane mirror
12.
Multiple Choice
1 pts•30 sAnswer choicesWhat is a virtual image?
Image formed on a screen
Image not formed on a screen
Image that can be printed
13.
Multiple Choice
1 pts•30 sAnswer choicesCan light travel through a vacuum?
Yes
No
Only in darkness
14.
Multiple Choice
1 pts•30 sAnswer choicesWhy do shadows form?
Because of temperature
Because light travels in a straight line
Because the object glows
15.
Multiple Choice
1 pts•30 sAnswer choicesWhat happens during reflection of light?
Light bends
Light disappears
Light bounces back
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