Kinds of energy
Energy can be created or destroyed (TRUE or FALSE)
FALSE
What is a conductor?
A kind of material that conducts thermal energy efficiently
What is a wave?
A wave is a disturbance that transfers energy through space or matter without the permanent displacement of the medium.
What is the law of attraction between the two poles of a magnet (+ -)
Opposites attract, equals repel
What is experimental design?
a process for conducting research in a controlled and objective, a way to draw conclusions about a hypothesis identifying variables and defining groups
Mention at least 2 kinds of energy
- Thermal
-Kinetic
- Potential
- Chemical
-Mechanical
Name 2 examples of materials that transfer thermal energy efficiently and 2 of materials that don't transfer thermal energy efficiently
______________________
What are the two kinds of wave?
- M...........
- E............
- Mechanical
- Electromagnetic
Earth has a giant magnetic field (TRUE or FALSE)
TRUE
What is a hypothesis?
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.
Describe the difference between kinetic and potential energy
_________________
what are the three kinds of heat transfer?
- R......
- C......
- C......
- Radiation
- Convection
- Conduction
What is wavelength?
The distance from crest to crest in between two waves
What happens to the poles (+ -) when a magnet is broken
When a magnet is cut in half, each half becomes a smaller magnet with its own north and south poles.
What is the dependent variable?
The variable tested, the variable in which you desire to see a change to measure for the purpose of your experiment. It suffers the effects of the independent variable
What is an everyday example of chemical energy?
_______________________
What is the kind of heat transfer the sun gives?
Radiation
What is frequency?
the number of waves that pass a fixed point in unit time
What is an electromagnet?
An electromagnet is a type of magnet that is created by electric current flowing through a coil of wire, which generates a magnetic field.
What is the independent variable?
The variable you change on purpose to perform an experiment and cause a change
Give one example of a device that collects energy so we can use it.
- Solar panel, etc.
Mention one example of each kind of Heat transfer:
______________
Name at least 3 examples of electromagnetic waves
- Microwave
- Radiowave
- Infrared
- Visible light
- X-ray
- Ultraviolet
- Gamma rays
Give 2 examples where we see magnetism every day
______________
What is the control group and what is the experimental group?
The control group is the group that represents regular conditions with no change
The experimental group is the group where you are going to perform the experiment and changes