Renewable Energy
Renewable resources are resources that will not replenish themselves in a lifetime. True/False?
False
What is the force that can act in the direction of movement?
What is Thrust
Fossil fuels are non-renewable resources and include what 3 major resources?
what is oil, coal, and natural gas.
Buoyancy means the ability to...?
Float
What force of flight is used in Bernoulli's Principle?
Lift
What is a downfall of using hydro-energy?
It is expensive, it requires access to flowing water, it can have negative effects on aquatic life.
What is a force caused by gravity that acts on a living thing or an object in a downward direction?
What is Weight.
What type of energy uses uranium and is that a renewable or non-renewable resource?
Nuclear Power and it is non-renewable
If aluminum has a density of 2.7 g/cm cubed and water has a density of 1 g/cm cubed, will aluminum float or sink and why?
It will sink because it has greater density.
Why is the bottom of a wing generally flat?
It causes the air to move in a straighter line, which keeps a consistent lower speed and higher pressure.
What type of energy resource uses heat from the Earth?
What is geothermal power.
What is an upward force that acts to overcome the weight of a living thing or object and hold it in the air?
What is Lift
What is an advantage of using fossil fuels to heat our homes?
Easy to use and provide an efficient use of energy.
An object will sink when the buoyant force is _________ than the weight of the object.
Less than
Why are an airplanes wings curved?
The number one benefit of all renewable energy sources is?
Less harm to the environment and no greenhouse gas emissions.
Less pollution
Healthier for people
What is a force that can act in opposition to the direction of movement?
What is drag.
Using non-renewable resources is harmful to the Earth causing a major problem known as...
What is global warming
When the buoyant force is greater than the weight of an object then the object will________.
Float
Fast moving air creates low pressure while slow moving air creates ___________.
High pressure
What type of energy resource burns plants, crops, and animal waste to create heat and steam?
What is biomass
What are two ways forces affect the flight of living things and objects?
They can affect speed, altitude, and straight and level flight.
Why are scientists working to find more efficient sources of renewable energy?
To stop the regular use of non-renewable resources and help the environment.
the measure of how tightly packed the "stuff" or "matter" in an object is called...
What is density
What is Bernoulli's Principle?
The higher the flow velocity, the lower the pressure.