Kinetic and Potentiallll
What two factors determine an object's Gravitational Potential Energy?
Mass and Height
According to the Law of Conservation of Energy, energy cannot be created or ________.
Destroyed
What kind of energy is stored in food, batteries, and matches?
Chemical
What heat transfer occurs through direct touch?
Conduction
What is an atom?
Building blocks of matter. smallest unit of an element.
What two factors determine an object's Kinetic Energy?
Mass and Speed
At which point in a pendulum's swing is Kinetic energy at its minimum(lowest)?
At the highest points in the swing.. Where it turns back to the swing the opposite direction.
What type of energy is produced by the flow of electrons?
Electrical
What type of heat transfer moves through empty space as waves?
Radiation
What is compound?
Substances when 2 or more different elements bond together in a fixed ratio.
What is stored energy?
Potential energy
What type of energy is stored in a compressed spring or stretched rubber band?
Chemical --> Electrical --> Mechanical
You are warming your hands by a fire, what kind of heat transfer is that?
Radiation
What is the atomic number of Oxygen?
8
If you lift an object higher off the ground, what happens to its potential energy?
It increases.
True
Why are solar calculator and trees similar?
Both take in Radiant energy and convert it into a useful form. (Electrical for calculators and chemical for trees)
If you open the front door on a cold day, does teh cold air come in, or does the heat go out?
Where do electrons live?
Electron Cloud
What is the unit of measurement for energy?
Joules (J)
Increase the height of the ramp.
Why do your hands get warm when you rub them together?
Mechanical energy is converting into thermal energy due to friction.
Why do bridges have metal expansion joints built into them?
To allow metal to expand when it gains thermal energy during summer so they don't break.
What are the 2 types of harnessing nuclear energy?
Fission and Fusion.