Energy and Their Conservation

How are different forms of energy related?

• they can all be transformed into other forms of energy

• none of them can be transformed into other forms of energy

• they can be created

• they can be destroyed

Tags

NGSS.HS-PS3-3

Whenever a moving object experiences friction, some of its kinetic energy is transformed into __________ energy.

• thermal

• electrical

• nuclear

• mechanical

Tags

NGSS.MS-PS3-5

At which point is potential energy greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

When a pendulum (махало) swings, at which point is kinetic energy highest?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

• 3.2 J
• 4.2 J
• 2.0 J
• 12.8 J

Tags

NGSS.MS-PS3-1

How can I gain potential energy? (choose the best answer)

• Run a mile
• Walk up the stairs
• Climb a mountain
• Go down the stairs

Tags

NGSS.MS-PS3-2

What is mechanical energy?

• It is what metal creates when heated.
• All potential and kinetic energy in a system.
• It is motion of all matter.
• Energy of momentum.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What type of energy is in this picture?

• Kinetic
• Potential
• Chemical
• Sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

What is energy?

• rate of work
• Motion of an object
• ability to do work
• force over time

Which of the following has the most potential energy?

• A car at the top of a hill
• A car speeding down the hill
• A person at the top of a hill
• An acorn falling off a tree

Tags

NGSS.MS-PS3-2