Class 3 Evs Light and Shadow
Class 3 EVS Light and Shadow Fill in the Blanks:
1. The main source of natural light is the _______. Answer: Sun
2. _______ materials allow all light to pass through them. Answer: Transparent
3. Light travels in a _______ line. Answer: straight
4. Shadows are formed when _______ objects block light. Answer: opaque
5. The speed of light is approximately _______ km per second. Answer: 300,000
6. Materials that allow some light to pass through them are called _______ materials.
Answer: translucent
7. A mirror reflects light in _______ direction(s). Answer: one
8. The reversal of an image in a mirror is called _______. Answer: lateral inversion
9. Shadows are _______ in the morning and evening and shortest at noon. Answer: longest
10. The Moon reflects light from the _______. Answer: Sun
Class 3 EVS Light and Shadow Multiple Choice Questions (MCQs):
1. What is the main source of light on Earth?
a) Moon
b) Stars
c) Sun
d) Bulb
Answer: c) Sun
2. What type of material allows no light to pass through?
a) Transparent
b) Translucent
c) Opaque
d) Reflective
Answer: c) Opaque
3. What happens when light hits a rough surface?
a) It is absorbed
b) It bounces in all directions
c) It passes through
d) It creates a shadow
Answer: b) It bounces in all directions
4. Which of the following objects is nonluminous?
a) Sun
b) Firefly
c) Bulb
d) Moon
Answer: d) Moon
5. Shadows become _______ as the object moves closer to the light source.
a) Smaller
b) Bigger
c) Lighter
d) Invisible
Answer: b) Bigger
6. Which of these materials is translucent?
a) Glass
b) Tissue paper
c) Stone
d) Wood
Answer: b) Tissue paper
7. What type of surface reflects light in one direction?
a) Rough
b) Smooth and polished
c) Translucent
d) Opaque
Answer: b) Smooth and polished
8. The Moon emits its own light.
a) True
b) False
Answer: b) False
9. Which phenomenon shows light travels in a straight line?
a) Reflection
b) Shadow formation
c) Refraction
d) Lateral inversion
Answer: b) Shadow formation
10. What happens to the shadow of an object at noon?
a) It becomes longer
b) It disappears
c) It becomes shorter
d) It becomes faint
Answer: c) It becomes shorter
Class 3 EVS Light and Shadow True or False:
1. Light can pass through opaque materials. Answer: False
2. Shadows are longest in the morning and evening. Answer: True
3. Light bends when it travels. Answer: False
4. Transparent materials allow light to pass through completely. Answer: True
5. Stars are luminous objects. Answer: True
