Gr. 6, T1, L1 Energy, motion, force and work

Do you use energy when you push a person on a swing?

• no, because the swing glides through the air

• yes, because energy is the ability to do work or cause change.

• yes, because force is a push or pull.

• no, because I do not use all my might.

Tags

NGSS.MS-PS3-5

Are you using force when you push a person on a swing?

• no, because the formula is work = force x distance

• yes, because force is a push or pull.

• no, because power is the rate at which work is done.

• yes, because the swing glides through the air.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Does pushing a swing cause a change in motion?

• No, because power is the rate at which work is done.

• Yes, because power is equal to work divided by time.

• No, because power is equal to work divided by time.

• Yes, because the swing changes position.

Tags

NGSS.MS-PS2-2

If person A is pushing on one side of box to the west, person B is pushing to the east, person C pushing to the south and person D pushing to the north. If the box moves to the west, which person is doing work on the box?

• A

• B

• C

• C

Tags

NGSS.MS-PS2-2

What is the formula for work?

• work/time

• force x work

• work x distance

• force x distance

What can be said about the power someone uses when they turn on a light?

• The force of the light being turned on is the amount of joules being produced.

• The maximum power of the light being turned on is the amount of work being done by the light.

• The power of the light being turned on is the amount of energy transferred per time.

• The power of the light being turned on is the amount of force transferred per time.

If a person is pushing boxes, what can be said about the power the person is using?

• The power being used to move the boxes can be found by determining the rate at which work was done on the boxes.

• The force being used to move the boxes can be found by determining the the power at which work was done on the boxes.

• The maximum amount of work being used to move the boxes can be found by determining the direction the boxes are moving.

• The energy the person is exerting on the boxes shows the amount of force he is using.

Tags

NGSS.MS-PS3-5

Are you doing work when you lift a bag of groceries?

• no

• yes

• maybe

• sometimes

Tags

NGSS.MS-PS3-2

What is the formula for power?

• distance x force/energy

• time x distance/force

• work x distance/motion

• force x distance/time

When does work occur?

• work occurs when the directions of the energy and the motion are the same.

• work occurs when the motion of the energy and the rate are the same.

• work occurs when the directions of the force and the movement are the same.

• work occurs when the you put your best foot forward

Tags

NGSS.MS-PS3-5