What type of energy transformation is taking place in a flashlight
electrical to light
100
What are atoms stuck or bonded together?
Molecules
100
Why is a TV set not mechanical energy?
It is not moving. Just because it's a machine doesn't mean it's mechanical.
100
What is the definition of energy
What is the ability to cause change
200
What is the main source of light energy on earth?
The sun
200
when you fill a birthday balloon with helium gas and it floats, what energy transformation is taking place?
chemical to mechanical
200
What type of energy is stored in the bond between atoms?
Chemical energy
200
Which part of the atom is needed for electrical energy, and what charge is it (positive or negative)?
electrons- negative
200
What does it mean to draw a conclusion?
state what you learned from an experiment. Or describe what you learned using evidence.
300
How does sound travel (name 2 ways)
waves and vibrations
300
What transformation is taking place when plants use the sun to make their own food?
light to chemical
300
What three types of energy depend on atoms?
nuclear, chemical, and electrical
300
say the steps of the scientific method in the correct order, without looking
observation, question and research, hypothesize, experiment, analyze data, draw a conclusion
300
What is the law of conservation of energy?
Energy cannot be created or destroyed. It can only be changed into different forms of energy.
400
What are the two types of electrical energy we've talked about?
static electricity, and current electricity
400
Give an example of a transfer of sound energy to mechanical energy (hint- if you were here on halloween, you should know)
any time a sound makes something vibrate, which then makes something move
400
Where is nuclear energy stored?
In the nucleus of an atom. OR, in the protons and neutrons of an atom.
400
Give an example of something that involves the transformation of chemical energy to mechanical energy (and not the bottle rocket experiment from yesterday)
any time people or animals move, it transforms chemical energy into mechanical energy
400
What is the difference between chemical and nuclear energy? (you can draw a picture if you prefer)
nuclear energy is the energy inside just one atom, whereas chemical energy is the energy stored between atoms in a molecule.
500
Explain how chemical energy works.
Chemical energy is stored in chemical or atomic bonds. When these bonds are broken, energy is released.
500
Explain how electrical energy turns into mechanical energy when you rub a balloon on you hair, and then it make tin foil jump
the balloon is pulling electrons off your hair, giving the balloon a negative charge. This attracts the tin foil, making it jump up to it.
500
Draw and label all the parts of an atom
Protons and neutrons in the nucleus (center), electrons orbiting on the outside
500
Name all the forms of energy present when you wash clothes in a washing machine