Chapter 7 Science

Which type of energy is created when rubbing your hands together?

• sound

• light

• mechanical

• thermal

What do all forms of energy have in common?

• They can be observed with the eyes

• They describe only moving objects, not things that stay in place

• They cause changes in motion, temperature, or another property of an object

• They make things hotter or colder but do not affect motion or other properties of an object

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Why is an apple red?

• A stop sign is red so apples are red.

• The apple only absorbs red light, so the apple is red.

• The apple bounces back the red light, so the apple is red.

• The apple bends red light, so the apple is red,

Tags

NGSS.MS-PS4-2

Harbor drops a basketball on the ground and it bounces back up. What type of energy is responsible for this movement?

• electrical energy

• mechanical energy

• light energy

• heat energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which object would absorb the most heat when left in the sun?

• plastic cup

• wooden block

• metal spoon

• all the objects would absorb the same amount of heat

Tags

NGSS.MS-PS3-4

If a toy boat moves 10 cm on low fan speed, 25 cm on medium fan speed, and 40 cm on high fan speed. What conclusions can we make?

• The stronger the wind energy, the farther the boat moves.

• The toy boat moves the same distance at all fan speeds.

• Wind energy does not cause motion in objects

• The fan speed does not affect the toy boat

Tags

NGSS.MS-PS2-2

A student places a straw in a glass of water and notices that the straw appears broken at the water’s surface. Which statement best explains why this happens?

• The water blocks the light, causing the straw to look broken.

• The light bends when it moves from air to water, making the straw appear broken.

• The water absorbs the light and changes the way the straw looks.

• The straw actually bends in the water because of the weight of the liquid.

Tags

NGSS.MS-PS4-2

Which material would not allow light to pass through in a straight line?

• window

• water

• air

• mirror

Tags

NGSS.MS-PS4-2

How does light energy travel?

• It doesn't travel. 

• Light energy travels in a zig zag pattern. 

• 
  Light energy travels in a straight path until it reaches an object.

• Light energy can only travel from the sun to the earth.

A student shines a flashlight at a mirror . What happens when the light reaches the mirror?

• The mirror absorbs all of the light. 

• The mirror reflects the light. 

• The mirror refracts the light. 

• 
  Nothing happens to the light. 

Tags

NGSS.MS-PS4-2