Unit 2 Review

What is the energy transformation of the object in the picture?

• Chemical--> electromagnetic--> sound--> light

• Chemical--> electrical--> light

• Electric--> chemical--> light

• Chemical--> light

Potential and kinetic energy change as the ball bounces. Why does it stop bouncing?

• The energy is transformed to potential energy.

• The energy is transformed to heat and sound energy as the ball hits the ground.

• The mass is too small.

• Gravity pulls on the ball. This energy is greater than the mass of the ball.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How does temperature effect the state of matter of water?

• Temperature can physically change matter.

• Temperature chemically changes matter.

• When hot atoms move less.

• When cold the atoms have the most energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Select the subatomic particle that has a mass of 1 AMU.

Tags

NGSS.MS-PS1-1

Which object in the image has the most energy? Assume all glasses have the same temperature.

• The one with the smallest mass.

• The one with the most mass.

• The one I drink during lunch.

• The one with ice in it.

The sun on my skin is this kind of heat transfer.

• conduction

• radiation

• compaction

• convection

Walking on the sand barefoot in the middle of a sunny day transfers heat to my foot by __________________________.

• convection

• radiation

• compaction

• conduction

I put a pan on the stove burner and the pan gets hot. What type of energy transfer is this?

• radiation

• conduction

• convection

• condensation

Choose the example where temperature physically changes matter (there may be more than one answer ;)

• Ocean water evaporating and forming clouds.

• Water put into the freezer making ice cubes.

• Gas put in your car to make it run.

• Heating oil in a pan to make fried pickles.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Look at the table. Which item has the most thermal energy?

• Penny

• Nickle

• Dime

• Quarter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4