An invisible mixture of gases which make up the earth's atmosphere.
What is AIR?
100
Approximately one kilogram of air presses down on each square centimeter of your body. What property of air proves this?
What is property- AIR PRESSURE?
100
What does fire need to burn?
What is AIR?
100
This causes air molecules to gain in energy and rise?
What is HEAT?
100
What force helps lift an airplane?
What is AIR PRESSURE?
200
The mass of air that surrounds the earth.
What is the ATMOSPHERE?
200
In an experiment where a paper napkin is pushed in to the bottom of a glass and it is pushed inside a bowl of water. The napkin did not get wet because... What property of air proves this?
What is the property- AIR TAKES UP SPACE?
200
If a jar is put on top of a burning candle, what will happen?
What is the candle will BURN OUT?
200
What causes a barometer to drop?
What is increased AIR PRESSURE?
200
The force with which gravity pulls on an object.
What is WEIGHT?
300
The force exerted on the surface of objects by weight of air particles. It acts in all directions and increases with an increased concentration of air molecules.
What is AIR PRESSURE?
300
What property of air creates winds and storms? What property of air proves this?
Moving air is called wind?
300
When something shrinks, we say that it _____________.
What is COMPRESSED?
300
This happens to air molecules as they are heated.
What is RISE?
300
It extends some 450 kilometers into space and surrounds the earth.
What is our ATMOSPHERE?
400
When someone or something “fights back”, we say that they are showing __________________.
What is RESISTANCE?
400
A balloon filled with air weighs more than a deflated balloon. What property of air proves this?
What is the property- AIR HAS WEIGHT?
400
When air pushes back on something, we say that it is using air ________________________.
What is AIR RESISTANCE?
400
What is the device that measures air pressure and is used to predict changes in weather?
What is a BAROMETER?
400
It decreases as you go up in altitude and is greatest at sea level.
What is AIR PRESSURE?
500
When something gets larger in size we say it ________________ (s).
What is EXPANDS?
500
What property of air moves a balloon up a string? What property of air proves this?
What is AIR PRESSURE?
500
What force pulls down on an airplane?
What is GRAVITY?
500
Oxygen, nitrogen and other gas ______________ are found in air.
What is MOLECULES?
500
Which force keeps a parachute from falling quickly to the ground?