eQuizShow

Energy

Kinectic Energy

Question: Define energy term from text book.
Answer: Is the ability to do work.

Question: Define the term kinetic energy from textbook
Answer: The energy of an object that is due to the objects motion.

Question: What is the formula for kinetic energy?
Answer: KE=mv2/2 or 1/2 mv2

Question: What is the si unit for kinetic energy?
Answer: Joules

Question: What is the first name of the physicist that discovered the unit for work and energy?
Answer: James precott Joule

Potential energy

Question: Define the term potential energy from the textbook
Answer: Is the stored energy an object has because of its position.

Question: Define gravitational potential energy
Answer: When you lift an object, you do work on it. You use a force that is against the force of gravity

Question: What is formula for gravitational potential energy?
Answer: Gpe = weight x height

Question: What is the si unit for potential energy?
Answer: joules

Question: What else was Mr. Joules discovered in physics?
Answer: He established mechanical,electrical and thermal energy can be converted from one form to another.

Mechanical energy

Question: Define the term mechanical energy
Answer: The amount of work an object can do because of the objects kinetic and potential energies.

Question: Give an example of mechanical energy that was used in your text book.
Answer: A juggler throwing bowling pins in the air.

Question: Explain the process of jugglers bowling pins in the air.
Answer: The juggler is moving the pin with his hand, he is doing work on the pin to give it kinetic energy. But as soon as the pins leave his hand the pins kinetic energy starts changing into its potential energy.

Question: What is the gravitational potential energy of a cat that weighs 40N standing on the table that is 0.8 m above the ground?
Answer: GPE = 40 N x 0.8 m = 32 J

Question: What is the gravitational potential energy of a diver who weighs 500 N standing on a platform that is 10 m off the ground?
Answer: GPE = 500 N x 10 m = 5,000 J

Energy Conversions

Question: Define thermal energy and give one example of it.
Answer: Is all of the kinetic energy due to random motion of the particles that make up an object. Example boiling a pot of tea on a stove.

Question: A form of potential energy because it depends on the position and the arrangement of the atoms in a compound.
Answer: What is chemical energy?

Question: The energy of moving electrons
Answer: What is electrical energy?

Question: Energy caused by an objects vibrations.
Answer: What is sound energy?

Question: Energy that is produced by the vibrations of electrically charged particles
Answer: What is light energy?

Energy con. 2

Question: A form of energy that comes from a tiny amount of matter.
Answer: What is nuclear energy?

Question: When two or more small nuclei join together is called what?
Answer: What is fusion?

Question: When the nucleus of an atom splits apart is called what?
Answer: What is fission?

Question: Where does the nuclear energy come from?
Answer: Nuclear energy comes from changes in the nucleus of an atom.

Question: What type of energy does fission energy produce?
Answer: What is electrical energy?