Electric and Magnetic Energy
What happens if the north ends of two magnets are placed near each other?
They will repel each other.
What is potential energy?
Energy that is stored in a system or object
What is the rate of change of position (or distance traveled) with respect to time?
Speed
What are the four states of matter?
Solid, liquid, gas, and plasma
What is the average kinetic energy of all the particles in a material?
temperature
What is a directional flow of electrical charge through an object or medium?
Current
A 10 kg stone and a 5 kg stone are dropped from the same height. Which one will transfer more energy to the ground when it hits?
The 10kg stone
Two cars have the same mass. Car A’s speed is 25 mph. Car B’s speed is 30 mph. Which has more kinetic energy?
Car B
What type of energy transfer occurs when a mug of hot tea warms cold hands?
Conduction
What is matter?
Anything that has mass and takes up space
As the distance between magnets increases, the attraction between them will ________.
Decrease
What term describes where an object is located in relation to another object?
relative position
Kinetic energy is proportional to an object’s _______.
mass
What are the three methods of heat transfer?
Conduction, convection, and radiation
A group of interacting or interdependent elements forming a complex whole is called a...
system.
What will happen as an electron (-) gets closer to a proton (+)?
The attraction gets stronger.
What two factors affect the amount of potential energy in an object?
Height and mass
A 25 gram ball and a 10 gram ball are both rolling at the same speed. Which has more kinetic energy?
The 25g ball
Insulators serve to __________ the transfer of heat energy.
decrease
What is energy?
the ability to do work or cause change
What is the force resulting from interaction between electrically charged particles?
Electromagnetic force
As kinetic energy increases, potential energy ________.
decreases
What is mass?
The amount of matter in an object
Which direction does heat transfer? For how long?
Heat transfers from the higher temperature to the lower temperature until all particles have reached the same temperature.
What is the transfer of energy by the movement of electromagnetic waves or subatomic particles?
Radiation