Forms of Energy

The total amount of energy before and after a chemical reaction is the same. Thus, energy is

• created.

• destroyed.

• conserved.

• the same as mass.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS1-5

The property of matter that resists changes in motion is called

• friction.

• inertia.

• gravity.

• weight.

Which statement correctly describes chemical energy?

• Chemical energy is energy stored in the bonds between atoms.

• Chemical energy is the kinetic energy of moving and vibrating molecules.

• Chemical energy is the result of mass converted to energy in the nucleus of an atom.

• Chemical energy is energy stored as the result of stressing or stretching a substance.

Tags

NGSS.HS-PS1-4

A pendulum is pulled back and released. Which statement best describes the changes in the weight's potential energy (PE) and kinetic energy (KE) as it swings back and forth?

• Except for small losses to friction, there are no changes to the PE or KE of the weight.

• At the top of each swing, the weight has the maximum KE and no PE. At the bottom, it has maximum PE and no KE.

• At the top of each swing, the weight has the maximum PE and no KE, At the bottom, it has maximum KE and no PE.

• The PE and KE both increase as the weight swings down, and both decrease as the weight swings up.

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-2

A force of 10 newtons is used to push a 5-kilogram object a distance of 18 meters. What is the amount of work exerted on the object?

• 50 joules

• 90 joules

• 180 joules

• 900 joules

Tags

NGSS.MS-PS3-5

The objects in Group A are different from the objects in Group B because only the objects in Group A _________.

• are electrical appliances

• have chemical potential energy

• convert electrical energy to mechanical energy

• are fossil fuels

In the diagram above, a roller coaster car starts from rest at point A and moves along the track. At which point does the roller coaster car have the greatest kinetic energy?

• A

• B

• C

• D

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

What energy change do these appliances have in common?

• They convert electrical energy to thermal energy.

• They convert electrical energy to mechanical energy.

• They convert mechanical energy to electrical energy.

• They convert thermal energy to electrical energy.

The diagram shows a person swinging a golf club from point A to point D. The kinetic energy of the golf club would be greatest at

• A

• B

• C

• D

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

The temperature is higher inside a greenhouse than outside because of the conversion of

• radiant energy into thermal energy

• thermal energy into light energy

• nuclear energy into thermal energy

• electrical energy into thermal energy

Tags

NGSS.MS-PS1-4