Conservative Of Energy (Chapter 10)

Question 1

What is energy?

Answer 1

Is the ability to do work

Question 2

How to calculate work?

Answer 2

Force(F) x Distance (D)

Question 3

How to calculate Energy?

Answer 3

Force (F) x Distance (D)

Question 4

What is Gravitational potential energy ?

Answer 4

Is energy stored by a body due to its position in the gravitational force field

Question 5

What is Chemical energy?

Answer 5

Is energy stored by a body due to its chemical state

Question 6

What is Kinetic energy?

Answer 6

Is energy possessed by a body due to its motion

Question 7

Energy stored in a atomic nuclear due to its physical state is what type of energy

Answer 7

Nuclear energy

Question 8

Thermal energy transferred from hotter to cooler bodies are what type of energy?

Answer 8

Heat energy

Question 9

Energy transferred by charged particles(eg electrons) are what type of energy?

Answer 9

Electrical energy

Question 10

Energy transported as particles viberation through a material in the form of a wave is what type of energy?

Answer 10

Sound energy

Question 11

What is Electromagnetic energy?

Answer 11

Is energy transported in forms of waves as electric and magnetic field viberation

Question 12

The principal of conservation of energy state that?

Answer 12

Energy cannot be created or destroyed but can be transformed from one type to another

Question 13

What is the energy transformation when a stone falling from a cliff and crashing to the ground

Answer 13

Gravitational potential energy—-> Kinetic energy—-> heat and sound energy

Question 14

What energy transformation occurs when a diesel electric power station producting electricity?

Answer 14

Chemical potential energy—->heat energy—->Kinetic energy—->Electrical energy

Question 15

What is Photosynthesis energy transformation?

Answer 15

Light energy—->Chemical energy

Question 16

What is Nuclear Fission?

Answer 16

Is the splitting of a large atomic nucleus into smaller atomic nuclei

Question 17

What is Nuclear Fusion?

Answer 17

Is joining of small atomic nuclei to form a larger atomic nucleus

Question 18

Electricity in nuclear power plants is used to produce what?

Answer 18

Nuclear reactor

Question 19

What transport and transfer of energy?

Answer 19

Conduction
Collision
Conversation
Waves

Question 20

What transfer energy by waves?

Answer 20

Waves are produced by viberation

Question 21

What are transverse waves?

Answer 21

Are waves that have crests and trough and transfer energy to perpendicular to the direction of viberation of their source

Question 22

What are Longitudinal waves?

Answer 22

Are waves that have regions of high and low pressure

Question 23

Three type of Electromagnetic waves are

Answer 23

Radio and Tv, X-rays and gamma rates

Question 24

What is the velocity of a body?

Answer 24

Is its speed in a particular direction

Question 25

What is the momentum of a body?

Answer 25

Is the product of its mass and velocity

Question 26

Formula for the Momentum and Velocity?

Answer 26

P=M x V

Question 27

Calculate the momentum of body x of mass 40kg and velocity 2ms-¹

Answer 27

P=M×V
= 40kg × 2ms-¹
= 80kgm-¹

Question 28

Body X collides with a stationary Body Y and comes to rest. What is the total of momentum after the Collision?

Answer 28

P=(Ma×Va) + (Mb×Vb)
=(40kg×2ms-¹) + (40kg+0ms-¹)
=80kgms-¹ + 0kgms-¹
=80kgms-¹