Energy
Force, Motion, and Energy
Electricity & Magnetism
Sound
Light
100
Define Energy
The ability to do work or to cause change. The change can take many forms.
100
What is motion?
MOTION describes an object’s direction and speed.
100
Insulators are....
Insulators are materials that do not allow electricity to flow easily through them (rubber, wood, plastic).
100
Define sound
Sound is what we hear when matter vibrates. Sound is a form of mechanical energy produced and SOUND is transmitted by vibrating matter. Sound travels in compression waves.
100
Visible light is a form of _______ energy that we can see. Light travels in a ______ line until it hits an object.
radiant, straight
200
Name the four important forms of energy.
Radiant, Mechanical, Thermal, and Electrical
200
What is speed?
SPEED describes how fast an object is moving.
200
Conductors are...
These materials allow electricity to flow easily through them (metals).
200
What is a wavelength?
The distance between two compressions or two rarefaction.
200
Fill in the blanks below with the following options(low or high)
Short wavelengths produce _____energy.
Long wavelengths produce ______ energy
Long wavelengths produce low energy
Short wavelengths produce high energy.
300
What is the "Energy Law"?
Energy cannot be created or destroyed; however, it can transform from one form of energy into another form of energy in order to do work. Energy is conserved.
300
Define Net Force
NET FORCE is the combination of all forces acting on an object.
300
Electrical Energy can be transformed into these forms of energy.....
Thermal (heat), Radiant (light), and Mechanical (motion)
300
Sound waves travel only where there is _______ to transmit them. They need something to carry the _________.
matter, vibration
300
What does "ROY G BV" stand for?
Red Orange Yellow Green Blue Violet
400
What is "work"?
A work is said to be done when a force applied on an object causes it to move a certain distance in the direction of force.
400
Define Friction
FRICTION is the resistance to motion that occurs when two objects move against each other.
400
An electromagnet is...
A magnet made by passing an electrical current through a coil of wire wrapped around a metal core. A closed circuit creates a simple electromagnet.
400
Define Pitch
How high or low a sound is
400
Describe the following:
Transparent
Translucent
Opaque
Transparent: Light passes through easily.
Translucent: Light passes through partially.
Opaque: Light does not pass through at all.
500
Define all four important forms of energy.
Radiant energy – Energy that travels in waves and particles
Mechanical energy – The energy an object has due to its motion or position
Thermal energy – The energy of heat transfer Electrical energy – The energy of flowing electrons
500
Kinetic Energy is...
KINETIC ENERGY is the energy an object has because of its motion.
(Some energy is stored. This is called potential energy.)
500
Fill in the blanks below with the following options: open or closed
If a simple circuit is ____ then it will NOT produce electricity. If a simple circuit is ______ then it WILL produce electricity.
Open Circuit Electricity does not flow.
Closed Circuit Electricity flows.
500
Fast vibrations=_____ pitch
Slow vibrations=_____ pitch
fast=high
slow=low
500
Describe reflected vs refracted light
Reflected: when light bounces off of an object
Refracted: when a light wave bends as it moves through one medium to another.