Chapter 4 Work and Energy Exam

A combination of two or more simple machines is a _____.

• Mechanical Advantage

• Compound Machine

• Power

• Elastic Machine

The Ratio of the output force to the input force is the _____ of a machine.

• Power

• Elastic Potential

• Mechanical Advantage

• Gravitational Potential

_____ is the rate at which energy is transformed.

• Work

• Power

• Law of conservation of energy

• Gravitational Potential Energy

The energy due to compressing a spring is ______?

• Power

• Gravitational Potential Energy

• Work

• Elastic Potential Energy

When a book is moved from a higher shelf to a lower shelf, _____ changes.

• Gravitational Potential Energy

• Power

• Work

• Kinetic Energy

Tags

NGSS.MS-PS3-2

The muscles of a runner transform chemical Potential energy into _____?

• Gravitational Energy

• Mechanical Energy / Kinetic Energy

• Power

• Elastic Energy

Tags

NGSS.MS-PS3-5

According to the _____ the universe's total amount of energy does not change.

• Law of Conservation of energy

• Elastic Potential energy

• Kinetic Theory

• Mechanical energy

Tags

NGSS.MS-PS3-5

True or false:  At the peak of the lift hill, a rollercoaster car has more potential energy than any other form of energy.

• True
• False

Tags

NGSS.MS-PS3-2

The gravitational force of any object near Earth's surface is ____.

• unknown
• friction
• Newton's first law
• 9.8 m/s²

energy of position

• potential energy
• kinetic energy

Tags

NGSS.MS-PS3-2