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Quiz about Why Does It Happen
Quiz about Why Does It Happen

Why Does It Happen? Trivia Quiz


This is a science quiz which will ask you various questions about why some things happen and what is the reason behind these phenomena. Hope you enjoy the quiz.

A multiple-choice quiz by The_Rubiks. Estimated time: 3 mins.
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Author
The_Rubiks
Time
3 mins
Type
Multiple Choice
Quiz #
397,064
Updated
May 26 23
# Qns
10
Difficulty
Easy
Avg Score
8 / 10
Plays
520
Last 3 plays: toddruby96 (6/10), Guest 182 (8/10), Guest 76 (6/10).
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Question 1 of 10
1. I tried to jump as high I can but I always returned to the ground. Why does this happen? Hint


Question 2 of 10
2. Rain drops are circular in shape due to air resistance.


Question 3 of 10
3. When we run, after some time we start feeling tired. What happens to our initial energy? Hint


Question 4 of 10
4. A balloon filled with helium will always move up in the atmosphere. Why does this happen? Hint


Question 5 of 10
5. We know that there are many stars in our galaxy which are brighter than our Sun but still the Sun is the brightest thing in our sky. Why is that? Hint


Question 6 of 10
6. During thunderstorms, lightning appears even before we hear thunder. This happens because light is faster than sound.


Question 7 of 10
7. When you try to walk on a smooth ramp, it is very difficult to do so. Why? Hint


Question 8 of 10
8. When I try to hit a wall with my hand, I feel pain in my hand. This is because the wall hits me with the same force in the opposite direction of my hand's movement.


Question 9 of 10
9. I accidentally dropped half a glass of water on the floor, with equal amounts on the floor and left in the glass. After some time, the water on the ground just disappeared but the water in the glass was still there. Why is this? Hint


Question 10 of 10
10. Why are leaves of trees usually green in colour? Hint





Most Recent Scores
Mar 13 2024 : toddruby96: 6/10
Feb 23 2024 : Guest 182: 8/10
Feb 14 2024 : Guest 76: 6/10
Feb 08 2024 : RedRobin7: 10/10
Feb 01 2024 : Guest 99: 9/10

Quiz Answer Key and Fun Facts
1. I tried to jump as high I can but I always returned to the ground. Why does this happen?

Answer: Due to gravity

Gravity is the force that pulls everything on Earth towards its center. This force binds everything to the Earth; even the Earth's atmosphere. So no matter how hard you try to jump, you will always return to the ground.
2. Rain drops are circular in shape due to air resistance.

Answer: False

Rain drops are circular in shape due to surface tension and not due to air resistance. Surface tension is a force generated by the molecules inside a drop to keep themselves together and maintain the least surface area. But if you look at a raindrop it will look elongated due to gravity.
3. When we run, after some time we start feeling tired. What happens to our initial energy?

Answer: It has been turned into kinetic energy

When we run, we use energy produced by our body to move our legs - this movement is kinetic energy. As we speed up, our kinetic energy increases. This increase comes from our body. Hence we start losing energy and feel tired. Later when we stop, this kinetic energy changes into heat which we feel when we have been exercising.
4. A balloon filled with helium will always move up in the atmosphere. Why does this happen?

Answer: Helium is less dense than air

Helium is a very light gas. It is even less dense than air and we know that things which are lighter float in a denser medium. So a balloon filled with helium will rise in air.
5. We know that there are many stars in our galaxy which are brighter than our Sun but still the Sun is the brightest thing in our sky. Why is that?

Answer: The Sun is closer to us than other stars

The Sun appears brightest in the sky from Earth because it is closer to Earth than other stars. There are many stars which are brighter than our Sun but they are very, very far away from us so they seem less bright compared to the Sun. Our Sun is just a medium sized star in the whole galaxy.
6. During thunderstorms, lightning appears even before we hear thunder. This happens because light is faster than sound.

Answer: True

When a thunderstorm happens, light always reaches us before we even hear thunder because light is much faster than sound. In air, sound travels with the speed of around 330 m/s but light travels with speed of 3*10^8 m/s. So light is 1,000,000 times faster than sound.
7. When you try to walk on a smooth ramp, it is very difficult to do so. Why?

Answer: Because of low friction

Friction is a force which occurs when two surfaces are in contact with each other. It opposes the motion of a body. So the higher the friction, the easier is is to walk on a surface. If something is smooth, it means it has very little friction with things that come into contact with it.
8. When I try to hit a wall with my hand, I feel pain in my hand. This is because the wall hits me with the same force in the opposite direction of my hand's movement.

Answer: True

This is an example of Newton's third law of motion. This law states that every action has an equal and opposite reaction and reaction happens always in opposite direction of force applied.
9. I accidentally dropped half a glass of water on the floor, with equal amounts on the floor and left in the glass. After some time, the water on the ground just disappeared but the water in the glass was still there. Why is this?

Answer: The water on the ground evaporates more quickly

When you drop water on the floor, the surface area of water increases, so water gets more area to evaporate hence it evaporates more quickly than the water in the glass and so disappears from sight faster.
10. Why are leaves of trees usually green in colour?

Answer: Due to the presence of chlorophyll in them

Chlorophyll is a pigment found in leaves of plants. This pigment gives a green color to leaves. Chlorophyll helps plants to capture sunlight and use it to make their food.
Source: Author The_Rubiks

This quiz was reviewed by FunTrivia editor NatalieW before going online.
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