Year 7 Energy: L1 Energy stores

Year 7 Energy:

L1 Energy stores

How can we store energy?

The Conservation of Energy

Energy cannot be created or destroyed.

That means we can only transfer it from one energy store to another.

But how can we store energy?

And when does energy transfer from one store to another?

Next we shall watch a video with information about eight different energy stores. While you are watching, copy the mind map into your science book. There will be time at the end for you to copy the mind map if you need it.

Multiple Choice

What is energy in science?

• The ability to do work

• The ability to do science

• The ability to do maths

• The ability to listen carefully

Multiple Choice

What do we mean by 'work' in science?

• Making something move

• Writing in your science book

• Listening to your teacher

• Doing experiments

Multiple Select

How much can you remember? Which three of these are energy stores?

• Thermal

• Kinetic (movement)

• Radiation

• Conduction

• Chemical

Multiple Choice

Kinetic energy is energy you have when you are:

• holding two magnets apart

• moving

• eating

• standing in a gravitational field

Multiple Choice

Thermal energy is energy an object has when it is:

• cold

• hot

• in a thermos flask

• freezing

Multiple Select

Chemical energy is energy stored in (choose all that apply):

• food

• chemical bonds

• fuels

• batteries

Multiple Select

How much can you remember? Which three of these are energy stores?

• Mechanical

• Elastic potential energy

• Gravitational potential energy

• Light

• Electrostatic

Multiple Choice

Elastic potential energy is energy that a _______ has when it is ________.

• rubber band, burning

• spring, stretched

• rubber band, thrown in the air

• brain, learning

Multiple Choice

Objects that are higher up (further away from the ground) have _________ gravitational potential energy

• more

• less

• the same

• no

Multiple Choice

Electrostatic potential energy is energy stored by:

• an electrical circuit

• a charged battery

• positively or negatively charged objects attracting each other

• an uncharged battery

Multiple Select

How much can you remember? Which three of these are energy stores?

• Magnetic

• Electrical

• Nuclear

• Light

• Electrostatic

Make sure you have got this copied to your science book before we go on.

Poll

Would you like to watch the video again?

• Yes

• No

Poll

Are you ready to go on?

• Yes

• No

Open Ended

Name an energy store

Poll

We're going to review what the types of energy store mean. Are you feeling ready for that?

• Yes

• No

Open Ended

If you said no, what would you like to go over? (If you said yes, please answer 'Nothing')

Multiple Choice

Nuclear energy is energy found in the nucleus of an atom

• True

• False

Multiple Choice

Two magnets pushing each other apart are storing _______ _________

• magnetic energy

• thermal energy

• kinetic energy

• chemical energy

Multiple Choice

Which sort of energy store is a stretched spring (mostly)?

• Thermal

• Nuclear

• Elastic potential

• Kinetic

Multiple Choice

A car moving at 100 miles an hour has _______ __________ energy than a car moving at 10 miles an hour

• more kinetic

• less kinetic

• more thermal

• less thermal

Multiple Choice

A firework that has not been lit is a store of _______ ________

• chemical energy

• fuel energy

• thermal energy

• gravitational potential energy

Multiple Choice

What sort of energy store is a battery (mostly)?

• Magnetic

• Thermal

• Electrical

• Chemical

Multiple Choice

A cup of water at 50 degrees Celsius contains ______ _______ energy than the same cup of water at 1 degree Celsius

• more kinetic

• more thermal

• less kinetic

• less thermal

Multiple Choice

Which sort of energy store is food (mostly)? Pick one answer.

• Chemical

• Elastic

• Electrostatic

• Magnetic

Multiple Choice

What sort of energy store is a cup of boiling water (mostly)?

• Magnetic

• Gravitational potential

• Thermal

• Kinetic

Open Ended

Do you have any questions about energy stores before we go on to energy transfers?

Energy can be transferred between stores.

We'll think about how in our next lesson, but first, let's practise identifying energy stores...

Multiple Choice

When I wind up the spring of a windup toy, I put energy into its

• gravitational potential energy store

• electrostatic energy store

• thermal energy store

• elastic potential energy store

Multiple Choice

When the toy unwinds and moves, energy from its elastic potential energy store is transferred to its

• kinetic energy store

• gravitational potential energy store

• magnetic energy store

• electrostatic energy store

Multiple Choice

When I burn wood to heat a kettle full of water, energy is transferred out of the wood's

• kinetic energy store

• thermal energy store

• nuclear energy store

• chemical energy store

Multiple Choice

When I burn wood to heat a kettle full of water, energy is transferred into this store of the kettle and the water:

• chemical energy store

• thermal energy store

• electrostatic energy store

• kinetic energy store

The Conservation of Energy

Energy cannot be created or destroyed.

That means we can only transfer it from one energy store to another.

But how can we store energy?

And when does energy transfer from one store to another?

Remember what we said at the beginning?

Energy cannot be created or destroyed.

That means when we transfer energy from one store to another and back again, we don't get more energy back than was in the first store.

Watch the start of the pendulum video

Multiple Choice

When a pendulum is at its highest at the end of its swing, it has the most ____________ _________ energy it can.

• gravitational potential

• electrostatic

• elastic

• kinetic

Multiple Choice

When the pendulum is at the bottom of its swing, it has the most ____________ energy

• kinetic

• chemical

• thermal

• nuclear

Multiple Choice

Make a prediction: When the professor releases the ball, and it swings to the other end of its swing and then back again, will it injure him on its return?

• Yes

• No

Open Ended

That's the end of this quizizz lesson. Please let me know how you found it. For example, was the pace too slow, just right, or too fast? did you find it interesting? Would you like more quizizz lessons or do you prefer being able to go off and do your own thing? Let me know what you think. We'll continue in the next period on Teams so please join our Teams meeting.