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2 nd 6 weeks Vocabulary. Density. Amount of mass (g) in a given volume (cm 3 ) of a substance or object; found by dividing the mass of the object by its volume. D= m/v. Displacement.

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density
Density

Amount of mass (g) in a given

volume (cm3) of

a substance or

object; found by

dividing the mass

of the object by

its volume. D= m/v

displacement
Displacement

Occurs when an object is placed in water or fluid and the object pushes the water out of the way and takes its place.

physical change
Physical Change

Occurs when one or more physical

properties of a substance are

changed; many

physical changes

can be undone by

physical means

chemical change
Chemical Change

Occurs when one or more

substances are changed into

new substances with

different properties;

cannot be undone by

physical means

phase change
Phase Change

A change in the state of matter of a substance. Phase changes are physical changes.

matter
Matter

The material that all objects and

substances are made of; anything

that has mass

and takes up

space

non renewable resource
Non-renewable Resource

Natural resources that cannot

be replaced within

our lifetime,

such as oil, coal,

natural gas, and

minerals.

renewable resource
Renewable Resource

Natural resources that can

be renewed

or replaced by

nature, such as

food crops and

solar energy

inexhaustible resource
Inexhaustible Resource

Natural

resources

that can never

be use in their

entirety

depleted
Depleted

To use up or empty a resource.

biomass
Biomass

A renewable energy source that comes from living, or recently living organisms.

potential energy
Potential Energy

Stored energy

an object has

because of its

position or

shape.

kinetic energy
Kinetic Energy

energy due to the

motion

of an

object

hydropower
Hydropower

Power that comes from the force or energy of moving water.

wind energy
Wind Energy

The converting (changing) of wind energy into a useful form of energy, such as using wind turbines to make electricity.

nuclear power
Nuclear Power

Power that is created from the heat from splitting atoms.

geothermal energy
Geothermal Energy

Thermal or heat energy generated and stored in the Earth.

solar energy
Solar Energy

Radiant light and heat from the sun.

slide21
Coal

A type of nonrenewable fuel source made mostly of carbon formed from the remains of plant matter.

slide22
Oil

A nonrenewable fossil fuel formed from the remains of dead plants and animals.

natural gas
Natural Gas

A nonrenewable energy resource created from the remains of dead plant and animals. It is used mostly for heating homes.

Natural gas drilling rig

energy
Energy

the ability to do work

force
Force

A push or pull

Force has size and direction

4 N

motion
Motion

Motion is always described

relative to some reference point.

All motion involves

a change of

position.