This is the rate at which an object changes position. It measures how fast an object moves.
What is speed?
100
This is the energy in the form of vibrations passing through matter. It cannot travel through empty space, where there is no matter.
What is sound?
100
This is the most important source of light energy on Earth Without this constant light energy, Earth would be a dead planet.
What is the sun?
100
This is the transfer of heat that occurs then one thing touches another.
What is conduction?
200
This is when you compare objects that change position with objects that do not.
What is relative motion?
200
Total distance divided by total time
What is the equation to average speed?
200
These travel quickly through most solids; and tend to travel more slowly through liquids; while they travel the slowest in gases.
What are sound waves?
200
This is the form of light energy we can see. It travels from it's source as waves. It also has wavelengths and frequencies.
What is visible light?
200
This is the transfer of thermal energy as matter moves. Here, a gas or a liquid moves from place to place.
What is convection?
300
This is a place or object used to determine if an object is in motion.
What is frame of reference?
300
The car traveled 231 kilometers from point B to point C in 3 hours.
Speed = 231 km
--------
3 hr
What is 77 km/hr?
300
This is a the number of waves that pass a point in a certain amount of time.
This is the distance between a point on one wave and a similar point on the next wave.
What is frequency and wavelength?
300
This is a piece of glass that separates white light into its different wavelengths.
What is a prism?
300
This occurs when two surfaces rub together. (Hint: rub your hands together quickly)
What is friction?
400
This is any push or pull. It can also make a moving object move faster, slow down, stop, or change direction.
What is force?
400
This combines both the speed and the direction an object is moving.
What is velocity?
400
This is how high or low a sound is.
What is pitch?
400
This is light that changes speed when it passes into a new medium, causing the light to bend.
What is refraction?
400
This is a source of heat. It can be coal, natural gas and oil that is burned to produce useful heat.
What are fossil fuels?
500
The force that pulls all objects toward each other.
What is gravity?
500
North, South, East, West, left, right, up , down.
What are words that describe direction?
500
This is a measure of how strong a sound seems to us. The more energy there is in the sound wave, the louder the sound and higher this becomes.
What is volume?
500
This occurs when light rays bounce off, or reflect from, a surface back to your eyes.
What is reflection?
500
This is the energy that is sent out in waves. It is converted to thermal energy and you feel warm.