IQWST PS2 Lessons 7-11

A student hits a tuning fork with a mallet.  A high-pitched sound is produced. Which describes what happened?

• Energy transfer from the mallet to the tuning fork to the air molecules.

• Energy transformation from the mallet to the tuning fork to the air molecules.

• Energy transformation from the KE to TE and then TE to SE.

• Energy transfer from the mallet to the air.

Tags

NGSS.MS-PS3-5

As sound is produced from the tuning fork, what happens to the energy in the tuning fork?

• It decreases because the SE is transferring to the air.

• It decreases because the SE is being transformed to the air.

• It increases because sound is being produced.

• It increases because the sound is transforming KE to the air.

Tags

NGSS.MS-PS3-5

Why does sound energy explain why some things stop?

• SE does not help explain why things stop, only TE can do that.

• KE transfers to SE when objects impact, slide, etc. and converts to the surroundings, leaving less total energy for the object to keep going.

• When objects impact, slide, etc. they create SE and destroy KE which slows the object down.

• KE transforms to SE when objects impact, slide, etc. and transfers to the surroundings, leaving less total energy for the object to keep going.

Tags

NGSS.MS-PS3-5

The two factors that determine the amount of chemical energy are ________ and ____________.

• mass and speed

• mass and type of substance

• mass and height

• mass and temperature

What must occur for CE to be converted into other kinds of energies?

• An explosion

• The destruction of CE

• A chemical reaction

• An energy transfer

Tags

NGSS.MS-PS3-5

Which of the following explains what made the cup above the lit candle spin?

• CE from the candle to TE in the air to KE in the cup

• TE from the candle to CE in the air to KE in the cup

• CE from the candle to KE in the air to TE in the cup

• CE from the candle to KE in the cup

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How does CE explain why some things keep going?

• CE converts to other types of energy which then transfer to whatever object was losing energy to the surroundings

• CE only converts to KE which makes things keep going because KE is the energy of movement

• CE reactions can go on forever so energy is created out of nothing and this makes things keep going

• CE reactions do not explain why things keep going because they are just explosions and science experiments

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The power went out at my house and all I have to use for a light source is my emergency hand crank generator flashlight! What energy transformations are occurring to make it work?

• chemical energy is transforming to electrical energy

• kinetic energy is transforming to chemical energy

• electrical energy is transforming to kinetic energy

• kinetic energy is transforming to electrical energy

Tags

NGSS.MS-PS3-5

​The two factors that determine the amount of kinetic energy are __________ and ________. ​

• mass and speed

• mass and height

• mass and temperature

• mass and type of substance

Tags

NGSS.MS-PS3-1

​The two factors that determine the amount of thermal energy are ___________ and ____________. ​

• mass and speed

• mass and height

• mass and temperature

• mass and type of substance

Tags

NGSS.MS-PS3-4