3.8 Post Test (Mod)

The image shows street lights powered by solar panels. Which sequence shows the energy transformations taking place in these lights?

• gravitational potential energy → motion energy → radiant energy

• gravitational potential energy → vibrational energy → chemical potential energy

• sound energy → chemical potential energy → radiant energy

• radiant energy → electric energy → radiant energy

• radiant energy → chemical potential energy → motion energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Select ALL the correct answers. A worker is holding a filled gas cylinder still. Which two sentences are true about the energy of the filled gas cylinder?

• The gas cylinder has kinetic energy.

• The gas cylinder has potential energy.

• The gas cylinder is doing work.

• The gas cylinder has stored energy.

It has motion energy because it will fall if let go.

• True

• False

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

It has gravitational potential energy because of its height.

• True

• False

Tags

NGSS.MS-PS3-2

Its atoms and molecules have thermal energy.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Match each form of energy to its description.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

Select the correct answer from each drop-down menu. energy of a compressed string

Tags

NGSS.MS-PS3-2

Select the correct answer from each drop-down menu. energy of coal

Tags

NGSS.MS-PS3-4

Select the correct answer from the drop-down menu. What’s the kinetic energy of the roller coaster at the top and bottom of the hill? Use $ KE = \frac{1}{2} mv^2 $. A kiddie roller coaster car has a mass 100 kilograms. At the top of a hill, it's moving at a speed of 3 meters/second. After reaching the bottom of the hill, its speed doubles. The car’s kinetic energy at the bottom is [ Select ] its kinetic energy at the top. The car has [ Select ] joules of kinetic energy at the bottom of the hill.

Tags

NGSS.MS-PS3-1

Select the correct answer. Five marbles roll down a ramp. Each marble reaches the bottom of the ramp at a speed of 3 meters/second. Which marble has the highest kinetic energy at the bottom of the ramp? The table lists the mass of each marble.

• Marble 1

• Marble 4

• Marble 3

• Marble 5

• Marble 2

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5