Conservative Of Energy (Chapter 10) Flashcards

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1
Q

What is energy?

A

Is the ability to do work

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2
Q

How to calculate work?

A

Force(F) x Distance (D)

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3
Q

How to calculate Energy?

A

Force (F) x Distance (D)

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4
Q

What is Gravitational potential energy ?

A

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

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5
Q

What is Chemical energy?

A

Is energy stored by a body due to its chemical state

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6
Q

What is Kinetic energy?

A

Is energy possessed by a body due to its motion

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7
Q

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

A

Nuclear energy

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8
Q

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

A

Heat energy

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9
Q

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

A

Electrical energy

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10
Q

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

A

Sound energy

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11
Q

What is Electromagnetic energy?

A

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

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12
Q

The principal of conservation of energy state that?

A

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

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13
Q

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

A

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

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14
Q

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

A

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

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15
Q

What is Photosynthesis energy transformation?

A

Light energy—->Chemical energy

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16
Q

What is Nuclear Fission?

A

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

17
Q

What is Nuclear Fusion?

A

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

18
Q

Electricity in nuclear power plants is used to produce what?

A

Nuclear reactor

19
Q

What transport and transfer of energy?

A

Conduction
Collision
Conversation
Waves

20
Q

What transfer energy by waves?

A

Waves are produced by viberation

21
Q

What are transverse waves?

A

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

22
Q

What are Longitudinal waves?

A

Are waves that have regions of high and low pressure

23
Q

Three type of Electromagnetic waves are

A

Radio and Tv, X-rays and gamma rates

24
Q

What is the velocity of a body?

A

Is its speed in a particular direction

25
Q

What is the momentum of a body?

A

Is the product of its mass and velocity

26
Q

Formula for the Momentum and Velocity?

A

P=M x V

27
Q

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

A

P=M×V
= 40kg × 2ms-¹
= 80kgm-¹

28
Q

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

A

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