Energy
Waves
Machines
Electricity
Motion and Work
100
What are the two main types of waves?
Electromagnetic and mechanical
100
What is the range of waves from weakest to strongest energy level called?
The electromagnetic spectrum
100
Name 3 types of simple machines
Lever, screw, wedge, wheel and axle, incline plane, pulley
100
What type of material allows electricity to flow through it easily?
Conductors
100
What is inertia?
An object's resistance to movement.
200
The ability to do work or cause change is called what?
Energy
200
What is the weakest wave on the electromagnetic spectrum.
Radio waves
200
What is a compound machine? Give an example
A machine that uses 2 or more simple machines. A bicycle.
200
Provide an example of an insulator.
Rubber, glass, plastic, wood.
200
How does the mass of an object affect its inertia?
The greater the mass the greater the inertia.
300
What type of energy transformation is taking place when natural gas is used to heat water?
Chemical energy into thermal energy.
300
As the wavelength of a wave increases what happens to the energy of the wave.
The energy level increases
300
What unit is power measured in?
Joules
300
Explain what voltage is?
The force of electricity flowing from one point to another.
300
What two things must happen for work to be done.
Force must be used and the object must move.
400
What is kinetic energy? Give an example of something with kinetic energy.
Example must be an object moving.
400
True or false: We can see most of the waves in the magnetic spectrum.
False
400
What is the purpose of machines?
To make work easier/ to reduce the amount of force required.
400
What is the type of current produced by a battery?
A direct current.
400
How many laws of motion are there? What is one of them?
3. An object in motion tends to stay in motion unless acted upon.
500
Electromagnetic waves can transfer energy without a what?
Any sort of medium (liquid, solid, or gas)
500
What is a mechanical wave? Give an example.
A wave of energy that requires matter to move through. Waves in the ocean are an example of this.
500
*Daily double* Explain how simple machines help improve your life.
Answers will vary
500
What causes an electric current?
Electrons moving around that jump from an area of negative charge to positive charge.
500
The force of gravity on a person on the surface of any planet is called:
The weight.
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