A connection in a circuit that, if broken, would make the circuit incomplete
100
Fill in the blanks: All magnets have two ____ , they are called _______ and ______.
poles, north, south
100
When water evaporates, is it gaining or losing energy?
Gaining
200
An object that casts a shadow does this to most of the light that hits it
Absorb
200
Which would make a lower pitch, the longest string on a guitar or the shortest?
The longest
200
Which part(s) of my set of keys would conduct electricity?
a) the metal key
b) the rubber covering on the top of my house key
c) my plastic library card
d) the metal key ring
a and d
200
Opposite poles on magnets ___________
attract
200
What is it called when we can't see the moon?
New Moon
300
Light travels ___________________ until it hits something that changes its path
"in a straight line"
300
What does and amplifier do to sound?
Makes it louder
300
What is the minimum amount of wires you need to make a circuit with a battery and a bulb?
one
300
Name one kind of metal that is attracted to magnets
iron, cobalt, nickel
300
Name 4 forms of energy
heath, light, sound, magnetism, electricity
400
Name three things that would be likely to refract light
water, plastic, prisms, (anything transparent)
400
Give four examples of things that sound can travel through
air, water, metal, brick, wood, etc
400
Define insulator and give two examples
something that lets little or no electricity flow through it. examples: rubber, plastic, wood, paper, etc
400
Why do compasses work?
The earth has iron and nickel at its core and is one giant magnet.
400
Why would it be a bad idea to stick metal scissors in an electrical socket?
they would conduct electricity and you would be electrocuted
500
Give an example of changing light energy into another type of energy.
Photosynthesis, solar panels, a fire giving off heat.
500
What is an echo?
Sound bouncing off of something and coming back to you
500
Name something that changes electric energy into another form of energy and say what the second form of energy is.