UNIT 9 (FORCE) & UNIT 11 (ENERGY)

_____is formed mainly from the remains of plants that died millions of years ago

What is the density of water?

• 1 kilogram per meter

• 1 gram per cubic meter

• 1 gram per square meter

What is density?

• Force per unit Area

• Volume per unit Mass

• Mass per unit Volume

Which of this is an advantage of wind energy?

• No harmful gases are produced

• Turbines may be noisy

• no electricity when there is no wind

If the surface becomes smaller, the pressure becomes _____

_______ is a method of heat transfer explains why hot air balloons rise.

_____ is a method of heat transfer wherein warm air rises above a hot road surface?

_____ is the method of heat transfer wherein the planet Mars is warmed by energy from the sun?

How will we know if a substance is less dense than water?

• Nothing happens

• It will sink

• It will float

How do we calculate volume?

• length x mass x height

• length x width x height

• length x width x mass