Vocabulary and Formulas
Friction
Forces in the Water
Forces in the Air
Mystery Boxes
100
What are the 3 general properties of matter?
1. Mass
2. Volume
3. Density
100
What type of friction is shown in the picture?
Rolling friction
(Round object -- solid surface)
100
What is the formula for density?
Mass
Density = _______
Volume
100
What are two forces an object needs to fly?
Lift and Thrust
100
What type of fuel do many forms of transport use?
Fossil fuels
200
What is volume? What is the formula for the volume of a regular shape?
Volume is the space that matter occupies.
Volume = Length x Width x Height
200
Name the types of friction
Sliding friction
Rolling friction
Fluid friction
200
If the particles of an object are very close together the object is ______ (more/less) dense
more
200
What is lift? What must it be the same as?
Lift is the upward force
It must be the same as the weight of an object
200
How do you figure out the volume of an irregular shape?
The displacement method
Final volume - Initial volume
1mL = 1cm^3
300
What is a non contact force? Give a specific example
Don't need physical contact for an object to move
Gravity: for example, an object falling to the ground
300
What type of friction do these boats experience? Which one experiences less? Why?
Fluid friction
The boat on the left has less fluid friction because of the shape of the boat (less surface area touching the water)
300
Objects that move on the surface of the water must be able to ____
Float
300
What is thrust? What produces thrust for an airplane?
Thrust is the force that keeps an object moving forward and stops it from slowing because of air resistance
A plane's engine produces thrust
300
Talk about the forces that allow this to fly.
Lift, thrust, what is creating the lift, what is creating the thrust
400
What is mass? How do you measure mass (units)?
Mass is the amount of matter in an object
Measured in mg, g, kg, t
400
Double points if you get this right!!
What is a name for the fluid friction a plane experiences?
Air resistance
400
What types of forces are these boats using to move (push or pull)?
-- points awarded based on explanation--
400
Which plane can fly faster? Why?
The one on the right
Because of the more streamlined shape
400
How does transport pollute the air and water?
Transport produces carbon dioxide and other gases
500
Double points if you get this right!!
What is density? Say the definition
Density is a measure of how much there is of a certain type of matter in a specific size of space
500
What is friction?
Friction is a force that can make an object slow down and stop. It causes resistance
500
Double points if you get this right!!
This one is super tricky: If both boats have the same mass and density, what do we know about their volume?
The volume is the same
D=M/V
500
Double points if you get this right!!
Look at the picture below (airplane wing).
What is the speed of the air above and below the wing?
What is the air pressure above and below the wing?
What force does this create?
500
What group of transport causes the most CO2 pollution?
Cars (because of the number of cars)