Energy
Forces of Motion
Aerodynamics
Structure and properties of matter
Energy source impacts
100
What is the difference between renewable and nonrenewable energy?
Renewable energy sources can be replenished within a lifetime while nonrenewable ones may take thousands of years if not forever.
100
What is the difference between gravity and weight?
Gravity is the attraction between things with mass while weight is the force exerted on something due to the object's gravity and mass.
100
What are the four forces at work in flight?
Weight
Thrust
Drag
Lift
100
What is the formula for density?
Density = Mass/Volume
100
Why are fossil fuels harmful to the environment?
Fossil fuels are harmful because they release greenhouse gases when burned for energy.
200
What is radiation?
Radiation is the movement of electromagnetic particles in waves.
200
What are the six simple machines?
They are:
Wedge
Pulley
Wheel-and-axle
Lever
Screw
Inclined Plane
200
How do high humidity levels affect the flight of something?
The flying object will go slower with more humidity.
200
What is the difference between a mixture and a compound?
A mixture is a substance that is elements combining chemically while compounds are substances that combine physically.
200
Why is wind turbine use discouraged? (name 2 reasons)
Possible answers:
Killing flying animals
Oil leaks
They are often in remote locations
They alter visual aesthetics
They create a small amount of noise pollution
300
What is the difference between convection and conduction?
Convection is when heat transfers through fluid and conduction is when heat transfers by direct contact between two objects.
300
How do hydraulic systems work?
Hydraulic systems work by pressuring a liquid above the press.
300
What year did the Wright brothers fly the first plane?
1903
300
What is a streak test used for?
A streak test is used to determine what color a mineral will be in its powdered form.
300
What are the waste products that come from fossil fuel burning?
Sulfur dioxide, carbon monoxide, nitrogen dioxide
400
Light is a form of energy. What are the five other forms of energy?
They are:
Chemical
Electrical
Radiant
Nuclear
Thermal
Mechanical
400
What is the formula for mechanical advantage?
Mechanical Advantage = output force/input force
400
What is the center of gravity?
The spot on an object where the weight is evenly distributed, and all sides are balanced.
400
What are the reactants of carbon dioxide?
Carbon and oxygen.
400
What is the primary source of energy to organisms that inhabit Earth?
The sun
500
What is the difference between nuclear fission and nuclear fission?
Nuclear fission has the atom split for energy and fusion has the two atoms fuse together.
500
What kind of pulley changes the direction of an input force?
A fixed pulley.
500
What is centripetal force?
A force that acts on objects that are moving in a circular frame.
500
What is the difference between corrosive and flammable?
Corrosive substances eat away at or destroy other things while flammable substances can be burned with fire.
500
How old is solar energy?
Solar energy is 200 years old.