Test Review- Circuits, Energy, Force and Motion

What forms of energy transformation do you see in this picture??

• Electrical -> Mechanical-> Sound

• Light -> Electrical-> Mechanical

• Mechanical -> Electrical

• Light-> Thermal -> Sound

Answer explanation

The electricity (electrical) turns on the fan and the blades turn (mechanical) which makes sound (sound).

What forms of Energy Transformation do you see in this picture?

• Sound -> Electrical -> Light

• Electrical -> thermal -> Light

• Electrical -> Light -> Heat

• Mechanical -> Sound -> Electrical

Answer explanation

The electricity (electric) turns on the light (light), THEN it heats up (Thermal).

A student shined light from a flashlight though a small hole in a cardboard. Then another student placed a piece of card stock in the light rays path. The light ray stopped. The light cannot move past the cardstock because...

• The light was refracted back to the source

• The light travels in a straight line and cannot go around objects

• The light doesn't travel very far

• The light was reflected off

Tags

NGSS.MS-PS4-2

The image shows a laswer cutting a piece of metal. Select all of the different types of energy involved.

• Mechanical- The laser moves across the metal

• Thermal- the laser produces sparks

• Sound- Pieces of metal hit the floor

• Light- The laser produces a beam of light

• chemical- it uses a battery to function

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-4

The class is OBSERVING a pet turtle in a pool. What energy transformation within the portable lamp?

• chemical -> Electrical

  -> Light

• mechanical -> electrical -> light

• electrical -> light -> sound

• heat -> electrical -> Light

Which materials would be a good insulator? Select all that apply.

• Steel

• Plastic

• Wood

• Copper

Tags

NGSS.MS-PS3-3

What is ALWAYS required to have a CLOSED circuit. Select all that apply.

• switch

• power source

• insulated wires

• a bell

Which statement explains a behavior of light through a microscope?

• Light refracts through the lens of the microscope

• Moving in straight lines keeps light from refracting

• Moving in straight lines causes lines to increase in brightness

• Light travels through a microscope without changing direction.

Tags

NGSS.MS-PS4-2

How would I reduce the amount of friction needed to pull the mass up the ramp?

• Increase the height of the ramp

• Add more mass

• Decrease the height of the ramp

• Pull the spring with 2 hands

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Which statement is true when the straw is pulled and the air is released?

• The car will move toward the wall, the opposite direction of the air

• The car will move in the same direction as the air.

• The car will move fast.

• The car will not move.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1