Explain the transformation that takes place when you rub your hands together. START FROM THE SUN ( 5 steps)
What is light energy( from the sun) to chemical energy (for the plants make sugar) to chemical (in food) to kinetic (movement of the hands) to thermal (heat produced from suns rays or hands moving together)
100
As the mass of an object moving at a given speed decreases its kinetic energy will ______________________.
What is decrease
100
What is the main for or radiation?
Sunlight
100
What is conduction? Give one example.
The process of energy moving from one object to another when they are touching like when you are touching a warm cup.
200
The type of Energy that depends on mass and position
What is potential energy
200
Explain the transformation that takes place when you turn on a flashlight. From the battery to the light.
4 steps
What is Chemical (of the battery) to electrical (flow of elctrons) to light energy(of the light) to thermal ( the heat produced by the light)
200
As the speed of a falling object increases, its kinetic energy will _____________________.
What is increase
200
Name three kids of radiation.
What is radio waves, microwaves, light, and x-rays
200
What is radiation? Give one example.
When energy moves through open space like the energy from the Sun.
300
Type of energy that depends on the speed and movement of particles or molecules.
What is thermal or heat energy
300
Explain the transformation of a book falling from table. Explain the type of energy and where it comes from. 3 steps
What is Potential ( due to the position of the book) to kinetic ( motion of the book) to thermal ( the friciton between the book and the air)
300
When you drop a book on the floor, what happens to its original potential energy?
What is the potential energy was transfered to kinetic and thermal energy
300
What determines the strength of a wave.
the wavelength and the distance between the tops of each wave
300
What is density? What has more density a cup of kool-aid or a cup of jello? Explain why.
Density is the amount of stuff something has. The jello would be more dense because it is made up of more "stuff" in the same amount of space.
400
Energy that moves through the air and that is received as vibrations.
What is sound energy
400
Explain the transformation of energy that occurs in the engine of a car. List the type of enrgy and where it comes from. 5 steps
What is Chemical (gas) to electrical(gas starting spark pugs and turning engine)to heat(from moving parts rubbing together) to kinetic (car moving) to electrical (the cars moving starts a generator to keep car charged)
400
A basketball is dropped from a height of 2m and another identical basketball is dropped from a height of 4m. Which ball has more kinetic energy just before it hits the ground?
What is The basketball dropped from a height of 4m because it has more speed.
400
Explain hydroelectric energy and give one advantage and one disadvantage.
What is hydroelectric energy is using the potential energy of water and turning it into electrical energy.
One advantage is it does not pollute.
One disadvantage is that it disrupts aquatic life.
400
State the Law of Conservation of Energy
What is Energy can not be created of destroyed it can only be transfered or tranformed.
500
Type of energy stored in bonds like bonds found in food.
What is Chemical energy
500
Give an example of the energy generated from kicking a soccer ball. Must include 4 forms of energy.
Breathing and getting ready (potential) running towards the ball (kinetic) foot hitting the ball (sound) ball through the air (kinetic) crowd cheering because i won the game (sound) hands clapping with joy (heat)
500
Explain how the law of conservation of energy.
Energy is never created or destroyed; it can only change form. Burning a fire, light energy, to heat energy, to chemical energy when fire is burnt up on the ground.
500
What are the seven types of radiation in the electromagnetic spectrum from the weakest to the strongest?