Thermal Energy
Heat ________ because it is less dense
What is rises?
Magnets are strongest at their _____.
What are poles?
What is static electricity?
________ occurs as waves are bent around a barrier or opening
What is diffraction?
A push or pull that can move an object
What is a force?
What is conduction?
Two objects have collected static electricity with the same charge. The objects are placed near each other and _____ each other.
A steady flow of electricity
What is a current?
Skiers wear sunglasses in the snow because white ___________ sunlight.
What is reflects?
A hammer being used by a person to remove a nail from a piece of wood
What is a lever?
In restaurants, red heat lamps are put above food to keep it warm. The lamp doesn't touch the food, but the light shines down onto the food and warms it. What type of heat transfer is this
What is radiation?
If the north pole of one magnet and the south pole of another magnet were near each other they would _________
What is attract?
3 things required to complete a circuit
What is a load (bulb), power source (battery), and a path (wires)?
The color that absorbs the most visible light energy.
What is black?
A wheel with a rope or belt around it - it helps a person lift or move something up, down, or across an area
What is a pulley?
Hot air drying a wet towel is an example of
What is convection?
To make an electromagnet, a conductor should be coiled around
What is an iron nail?
This circuit has only one way for the electricity to flow.
What is a series circuit?
A wave bending through a surface because of a change in speed is called
Simple machine used to open a curtain
What is a pulley?
The motion and position of the particles as thermal energy is added to a substance
What is speed up and spread apart?
Which MUST be included in an electromagnet?
a. electric current
b. light bulb
c. switch
d. motor
What is A. Electric current?
Gaining or losing _________ creates a charge on a particle.
What is electrons?
What is transmission?
The number of questions about simple machines on the test
What is 4?