Rainbow 🌈 mind map and MCq of Energy

 

 

 Rainbow 🌈 mind map Energy

Definition:  Energy is  the ability to do work. 

Work- Energy relationship : Work and Energy can be converted into each other.

Units: -  SI- joule 'J', common unit- calorie 'cal'

Relations:   1 cal= 4.2 joule 

 

Some forms of Energy:  

• Mechanical: i) Kinetic( due to motion of a body ii) Potential energy( due to position of a body)

• chemical 

• Muscular

• Electrical

• Magnetic 

•Heat 

• Light 

• Sound

 

Energy Transformation:-  

Energy can  change from one form to another  

Law of Conservation of Energy: 

Energy can neither be created nor be destroyed; it is converted from one form to another or transferred from one object to another  

The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy. This kinetic energy is enough to push them up to the next hill. The process continues. 

Rainbow 🌈 MCQ of  Energy

 

1.Energy is ability to 

 A) gain strength 
 B)  grain power
 C) do work
 D) None of above

ANSWER= (C) do work.
Explain:- Energy is ability to do work. 

 

2. How is work and Energy related?

 A) directly related 
 B) inversely related 
 C) not related 
 D) none of above 

ANSWER= (A) directly related 
Explain:- More Energy more work. 

 

3. S.I unit of Energy 

 A) joule
 B) calorie 
 C) erg
 D) None of above 

ANSWER= (A) joule
Explain:- S.I unit of Energy is joule 

 

4.one calorie  =  ___ joule

 A) 1
 B) 4.2 
 C) 0.23
 D) none of above 

ANSWER= (B) 4.2
Explain:- one calorie = 4.2 joule 

 

5. Kinetic energy of a body is due to its _______ whereas Potential energy of a body is due to its _____.  

 A) position, motion
 B) position, condition
 C) motion , position 
 D) motion, gravity 

ANSWER= (C) motion , position 
Explain:-  Kinetic energy of a body is due to its motion whereas Potential energy of a body is due to position of a body 

 

6. In roller coaster,(External energy + Potential energy)->  ______ -> Potential energy-> Kinetic energy, process continues. 

 A) external energy 
 B) internal energy 
 C) Kinetic energy 
 D) all of above

ANSWER= (C) Kinetic energy 
Explain:-The roller coaster cars gain potential energy as they are pulled to the top of the first hill. As the cars descend the potential energy is converted to kinetic energy. This kinetic energy is enough to push them up to the next hill. The process continues.

 

7. Energy can neither be created nor be destroyed; it is converted from one form to another or transferred from one object to another  

 A) Law of motion 
 B) Law of gravitation 
 C) Law of energy 
 D) Law of Conservation of energy 

ANSWER= (D) Law of Conservation of energy 
Explain:- Law of Conservation of energy states that Energy can neither be created nor be destroyed; it is converted from one form to another or transferred from one object to another . 

Link for rainbow 🌈 mind map of Kinetic energy 

Link for rainbow 🌈 mind map of Potential energy
Link for rainbow 🌈 mind map of Work


Here's a video representation: