Energy and Their Forms

What is the principle that underlies loads of the physics course?

• Energy is not related to temperature

• Energy is fixed in each energy store

• Energy is only transferred between different forms and objects

• Energy is created and destroyed

Answer explanation

The principle underlying loads in physics is that energy is only transferred between different forms and objects.

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Which form of energy is related to the movement or motion of an object?

• Gravitational potential energy

• Chemical energy

• Thermal energy

• Kinetic energy

Answer explanation

Kinetic energy is related to the movement or motion of an object.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What is the energy that an object possesses because of its position in a gravitational field?

• Chemical energy

• Thermal energy

• Gravitational potential energy

• Kinetic energy

Answer explanation

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field.

Where is the energy stored when it is transferred to an object?

• Chemical energy store

• Thermal energy store

• Kinetic energy store

• Magnetic energy store

Answer explanation

When energy is transferred to an object, it is stored in the thermal energy store. This is because the energy is converted into heat, which is stored in the object's particles.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What type of work done involves using a force to move an object?

• Thermal work

• Chemical work

• Mechanical work

• Electrical work

Answer explanation

Mechanical work involves using a force to move an object.

What is the energy required to overcome the resistance in the wires of a circuit?

• Gravitational potential energy

• Electrical energy

• Thermal energy

• Kinetic energy

Answer explanation

The energy required to overcome the resistance in the wires of a circuit is electrical energy. It is the correct choice because electrical energy is converted into heat energy due to the resistance in the wires.

Tags

NGSS.HS-PS2-5

In an open system, the matter of the system can exchange energy with the:

• Parallel world

• Inside world

• Outside world

• Underground world

Answer explanation

In an open system, matter can exchange energy with the outside world. This allows for the transfer of energy between the system and its surroundings.

What does electrical work involve?

• Using a force to move an object

• Current flows

• Overcoming resistance in the wires of a circuit

• Creating friction between brakes and wheels

Answer explanation

Electrical work involves the flow of current, which is the correct choice.

What does mechanical work done involve?

• Creating friction between brakes and wheels

• Overcoming resistance in the wires of a circuit

• Current flows

• Using a force to move an object

Answer explanation

Mechanical work done involves using a force to move an object.

Tags

NGSS.HS-PS2-1

What is the energy that holds magnets to your fridge?

• Magnetic energy

• Gravitational potential energy

• Thermal energy

• Chemical energy

Answer explanation

Magnets stick to your fridge due to magnetic energy, which is the force that attracts them. This energy is responsible for holding the magnets in place.

Tags

NGSS.HS-PS3-5