Energy

Question 1

What is the principle regarding the creation and destruction of energy?

Answer 1

Energy can never be created or destroyed.

Question 2

What happens to poles when they are pushed closer together?

Answer 2

Unlike poles are pulled apart.

Question 3

What type of energy is associated with the movement of particles?

Answer 3

Kinetic energy.

Question 4

What is the term for energy stored in chemical bonds?

Answer 4

Chemical energy.

Question 5

Fill in the blank: The energy stored in muscles and food is an example of _______.

Answer 5

Chemical energy.

Question 6

What happens to charged particles when they move closer together?

Answer 6

They are pushed apart.

Question 7

What is elastic energy?

Answer 7

Energy stored when an object is stretched or compressed.

Question 8

Fill in the blank: Elastic energy is stored in a _______.

Answer 8

stretched or compressed object.

Question 9

What is gravitational energy associated with?

Answer 9

An object’s position in a gravitational field.

Question 10

What type of energy is generated by nuclear reactions?

Answer 10

Nuclear energy.

Question 11

True or False: Chemical energy can be converted into other forms of energy.

Answer 11

True.

Question 12

What is the relationship between kinetic energy and the motion of particles?

Answer 12

Kinetic energy is related to the movement of particles.

Question 13

Which type of energy is stored in the bonds of atoms and molecules?

Answer 13

Chemical energy.

Question 14

What is an example of elastic energy?

Answer 14

A stretched balloon.

Question 15

Fill in the blank: Gravitational energy is associated with an object’s _______.

Answer 15

position.

Question 16

What kind of energy is associated with charged particles?

Answer 16

Electrical energy.

Question 17

What happens when like poles of magnets are brought together?

Answer 17

They repel each other.

Question 18

Fill in the blank: The energy stored in a compressed spring is an example of _______.

Answer 18

elastic energy.

Question 19

What is the effect of nuclear energy in terms of energy generation?

Answer 19

It is generated during nuclear reactions.

Question 20

Team Steve of team Johnathon

Answer 20

Team Steve if you picked Johnathan you deserve to fail your GCSE

Question 21

Who is the best poge

Answer 21

JJ

Question 22

What has the most- least wasted energy: filament bulb, LED bulb, or Halogen bulb?

Answer 22

LED bulb has the least wasted energy, followed by Halogen bulb, then filament bulb

This is due to the higher efficiency of LED technology compared to traditional bulbs.

Question 23

What is the power rating of an appliance?

Answer 23

The power rating indicates the rate at which an appliance consumes energy, typically measured in watts (W)

A higher power rating means the appliance uses more energy per unit time.

Question 24

What is a Sankey diagram?

Answer 24

A visual representation of energy transfers, showing useful energy output and wasted energy

It helps in analyzing the efficiency of energy use.

Question 25

How do you calculate the efficiency of an appliance?

Answer 25

Efficiency (%) = (Useful energy output / Total energy input) × 100 ## Footnote This formula quantifies how much input energy is converted to useful work.

Question 26

What is energy dissipation?

Answer 26

The process by which energy is transformed into less useful forms, often as heat due to friction ## Footnote This reduces the capacity of a system to perform work.

Question 27

What are the equations for Kinetic Energy?

Answer 27

Kinetic Energy (KE) = 0.5 × mass × velocity² ## Footnote This equation shows the relationship between mass, velocity, and kinetic energy.

Question 28

Give the equation for Gravitational Potential Energy.

Answer 28

Gravitational Potential Energy (GPE) = mass × gravitational field strength × height ## Footnote This equation describes the potential energy of an object due to its position above the ground.

Question 29

What is the law of conservation of energy?

Answer 29

Energy cannot be created or destroyed, only transformed from one form to another ## Footnote This principle is fundamental in understanding energy transfers in systems.

Question 30

List the 8 energy stores.

Answer 30

* Kinetic energy * Gravitational potential energy * Elastic potential energy * Thermal energy * Chemical energy * Nuclear energy * Electrical energy * Magnetic energy ## Footnote These stores represent different ways energy can be contained and transferred.

Question 31

What are the energy store changes when using a kettle?

Answer 31

Electrical energy is converted to thermal energy ## Footnote This change is crucial for boiling water in the kettle.

Question 32

Define work done and write the equation for it.

Answer 32

Work done = force × distance moved in the direction of the force ## Footnote This equation quantifies the amount of energy transferred when a force is applied.

Question 33

What is an example of a system where energy is converted from kinetic to thermal?

Answer 33

A bungee jump or a swinging pendulum ## Footnote In these systems, energy is dissipated as heat due to air resistance and friction.

Question 34

Best character from an inspector calls

Answer 34

Eric corse