Energy transfer

Which of the following statements are correct.

• A telephone produces sound energy.

• A stove is a form of energy.

• A sun is a form of energy.

• A microwave is a source of energy.

• There is energy in non-living things.

Study the picture. Arrange the energy chain in order based on the picture shown.

• water

• surrounding environment

• cup

• kettle

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Sort the following words based on their categories.

Groups:

(a) Source of energy

,

(b) Forms of energy

• microwave

• movement

• light

• food

• stove

• sound

• AC

• heat

• sun

• broom

Tags

NGSS.MS-PS3-4

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Mrs Rose pushes her baby's stroller. She gives energy to the stroller, so the stroller can move. This process is called ______ ________.

Tags

NGSS.MS-PS3-5

Which of the following group of source energy does not have the the same form of energy?

• sun, lamp, phone

• laptop, TV, radio, handphone

• vacuum cleaner, hairdryer, fan

• drum, light bulb, alarm clock

Mrs. Jen makes a cup of hot tea. She puts it on the table while she watches a Korean drama. After a while, the tea is not hot anymore. She thinks the heat energy in the hot tea is destroyed. Is Mrs. Jen correct? Explain your answer.

Answer explanation

Mrs Jen is not correct. The heat energy in the hot tea is not destroyed. It is transferred to the surrounding environment.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Jemima's class is on the 3rd floor. She finds it difficult to go upstairs as she feels tired easily. Jemima thinks it is because she does not have breakfast in the morning. Do you think Jemima is right? Explain your answer.

Answer explanation

Yes, Jemima is right. Human gets energy from food. Skipping her meal will make her does not have enough energy. If Jemima does not have energy, she will be tired easily and finds it difficult to go upstair.

The kids are playing with marbles by flicking them. What will happen if the kids flick the marbles harder?

Answer explanation

The marbles will go faster and farther as they get more energy to move.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Ben experiments with how energy transfers from one object to another object. He ensures he does the fair test. Explain why Ben needs to do the fair test.

Answer explanation

Tags

NGSS.MS-ETS1-4

NGSS.MS-PS3-4

Ben failed to experiment yesterday. He gave up and didn't want to continue the experiment because he thought he would never get the right result. Suggest how Ben can make sure that he does not make any mistakes when measuring.

Tags

NGSS.MS-PS2-2