Semester Test 9th Physical Science

Work is the product of ________.

• Speed & force

• Power & Force

• Force & Distance

• Motion & Force

Which is the following unit of work?

• Joules

• Watts

• Horsepower

• Newtons

Power is equal to work divided by _________.

• Distance

• Force

• Time

• Mechanical advantage

The energy of a moving object is ___________ energy.

• Kinetic

• Chemical

• Potential

• Nuclear

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

If the speed of an object doubles, its kinetic energy

• Doubles

• Stays the same

• Quadruples

• is halved

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Mechanical energy is

• Found in machinery

• Usually measured at the atomic level

• The sum of the chemical & thermal energy of an object

• The sum of kinetic & potential energy of an object

An example of the conversion of gravitational potential energy into kinetic energy is..

• A gasoline-powered engine

• A falling raindrop

• Striking a match

• A hockey puck sliding on the ice

Tags

NGSS.MS-PS3-2

The law of conservation of energy states that..

• Energy cannot be converted from one form to another

• Energy cannot be created or destroyed

• Energy resources must be used efficiently

• Energy is constantly being lost to friction

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The most renewable energy originates from..

• The sun

• Fossil Fuels

• The ground

• Uranium

__________ energy resources include oil, natural gas, coal and uranium.

• Nonrenewable

• Renewable

• Sun

• None