Show:
Name that energy
Thermal
Electrical
Chemical and Nuclear
Elecrtromagnetic
100
What is stored energy?
Potential
100
Define thermal energy?
The total potential and kinetic energy of the particles in an object.
100
Define electrical energy.
the energy of electric charges
100
Define chemical energy.
potential energy stored in chemical bonds that holds chemicals together
100
Define electromagnetic energy?
the energy of light and other forms of radiation
200
What is energy in motion?
kinetic energy
200
What instrument is used to measure thermal energy?
thermometer
200
Which two particles are needed for electrical energy to function? Name their charges for double points.
electrons are negative and protons are positive
200
Define nuclear energy.
stored in the nucleus of the atom
200
What is the source of Earth's electromagnetic energy?
the sun
300
What is the form of energy associated with position and motion of an object?
mechanical energy
300
Would an object have greater thermal energy with greater potential energy or greater kinetic energy?
kinetic energy
300
Name the three ways lightning can strike.
cloud to cloud cloud to ground ground to cloud
300
What is nuclear fission?
occurs when an atom splits.
300
How does electromagnetic energy travel?
on waves
400
What energy is potential energy plus kinetic energy?
Mechanical energy
400
Will the thermal energy of lava increase or decrease as it flows away from the volcano?
It is decrease b/c it is traveling away from the heat source. Heat also goes from hot to cold, so as it travels away the heat from the hot lava is moving into the cooler air that surrounds it and back into the Earth's surface.
400
Explain why electric charge flows the way it does.
Electrons are free to move, so they are attracted to protons. Electrons are negative and protons are positive and opposites attract. Electrons travel in the direction toward protons.
400
What is nuclear fusion?
the fusion or joining together of the nuclei of atoms
400
Name the two properties in this energy form.
electric and magnetic
500
What is the ability to do work or cause change?
energy
500
Which object has greater thermal energy? Explain why to get double points. boiling water OR an ice cube
boiling water b/c it has a greater kinetic energy, which means the particles are moving at a more rapid pace.
500
Explain why there are three way for lightning to strike.
Electrons move toward protons b/c they are attracted to them. Cloud to cloud means that one cloud has more protons than the other, so the electrons travel to that cloud. Ground to cloud means that there are more electrons on the ground, so they are attracted to the greater number or protons in the cloud. Cloud to ground means that there are more protons in the ground, so the electrons move toward the ground.
500
Explain why a cracker turns sweet in your mouth if you allow it to sit there.
The saliva starts to break down the starch to its simplest form, which is sugar.
500
Several part question. Points for each one correct. 1. What color do we typically see light? 2. What colors in order are in light? 3. Why do we only see reds, yellows, and oranges at sunset?
1. white or clear 2. red, orange, yellow, green, blue, indigo, and violet 3. Those colors travel on slower, so they bend more. As the Earth is turning away from the sun the other faster moving colors can bend around the perimeter of the Earth. The slower moving colors have a larger arc, so they can still bend around the perimeter of the Earth as it turns away from the sun.