Vocab
Define Matter
Anything that has mass and takes up space
Define light
the natural agent that stimulates sight and makes things visible.
What is kinetic energy?
Energy that an object has due to its motion
What is thermal energy?
Heat energy
What is electrical energy?
The energy of electric charges
Define reflect
heat, light, or sound hitting a surface and bouncing back without it being absorbed.
Define Amplitude
The height of a wave crest or trough
What is potential energy?
Stored energy that results from the position or shape of an object
What is mechanical energy
the energy of movement
Calculate the kinetic energy of an object with a mass of 100 kg and a velocity of 4 m/s. Kinetic Energy (KE) = ½ × mass (m) × velocity2 (v2)
800 J
Define property
a trait or characteristic used to define matter
Define wavelength
the distance between successive crests of a wave
What is work?
Force exerted on an object that causes it to move
What is electromagnetic energy?
The energy of light and other forms of radiation
What are the two types of potential energy?
elastic potential and gravitational potential
Define energy
the ability do work or cause change
Define Frequency
how often something occurs, or basically, how often a wave occurs
Give two examples of kinetic energy
answers vary
What are fossil fuels
coal, petroleum, or natural gas that is formed from the remains of ancient plants burned to release chemical energy
Calculate the kinetic energy of an object with a mass of 45 kg and a velocity of 2.45 m/s. Gravitational PE (PEg) = mass (m) × gravity (g) × height (h)
g= 9.8 m/s
1080.45
Friction
the force that one surface exerts on another when the two surfaces rub against each other
Define absorb
take in or soak up (energy or a liquid or other substance) by chemical or physical action
Give two examples of potential energy
answers vary
What is chemical energy?
The potential energy stored in chemical bonds
What is the Law of Conservation of Energy?
The rule that energy cannot be created or destroyed