Mass
grams/kilograms
Name 3 units we measure volume.
BONUS 100: name all 4
cubic meter, cubic centimeter, liter, milliliter
What is density?
The amount of matter contained in a certain volume
What is air made up of?
a mixture of different gases such as nitrogen, oxygen, carbon dioxide, water vapor, helium, etc.
Name 4 types of aircraft
Hot air balloon, plane, helicopter, airship
How do we measure mass?
Scales
What is volume?
The amount of space an object occupies
What is the density of water?
1 g/cm3
What is moving air called?
Wind
What is the only aircraft we learned about without an engine?
Hot air balloon
What is mass?
The amount of matter in an object
What do we use to measure volume?
Measuring cylinder
Density is a ______ property of matter.
specific
Air is a ______ and ______ gas.
colorless, odorless
Airships are filled with ____ or ____, which are less dense than air.
hydrogen / helium
True or false: liquids have mass
True
True or false: objects have no volume
False
When does an object float?
When its density is less than the liquid it is in
expands = heated
contracts = cooled
What is the name of the force that pushes planes upward?
BONUS 100: What do planes have to overcome in order to fly?
Lift
its own weight
What are the two general properties of matter?
Mass and volume
A measuring cylinder full of water reads 50 ml. If you place a ball in it, the water rises to 76 ml. What is the volume of the ball?
16 ml
The mass of a steel pipe is 150g. The volume of the pipe is 25cm3. What is the density?
6g/cm3
Name 4 reasons why air is important.
Photosynthesis, respiration, combustion, sound, flight, energy, etc.
Name a situation that uses lift (that is not a plane).
Flying a kite, throwing a frisbee