Kinetic Energy
What is kinetic energy?
The energy of motion.
What is thermal energy?
The energy of heat
What are particles?
Particles are tiny pieces of matter that make up everything around us, even things we can’t see.
What are the three main states of matter?
The three main states of matter are solid, liquid, and gas.
What should you do if you don’t know the answer to a test question?
Try to eliminate answers that don’t make sense, make your best guess, and move on so you don’t waste time. NEVER EVER leave ANY test question blank! A guess is better than no answer!
How does an object’s speed affect its kinetic energy?
The faster an object moves, the more kinetic energy it has.
What is heat transfer?
the movement of thermal energy between systems or objects due to a temperature difference.
How do particles move in a solid compared to a liquid?
In a solid, particles are tightly packed and only vibrate. In a liquid, they move more freely and can slide past each other.
What is evaporation?
A liquid becoming a gas
After you read the test question and all of the directions, if you are still confused, what should you do?
Go back and reread the question and any data tables, diagrams and reading passages that are also provided.
Can a parked car have kinetic energy?
No, because it is not moving.
What happens to thermal energy when a liquid cools down?
The particles slow down, and thermal energy decreases.
What happens to the particles in a substance when it changes from a liquid to a gas?
The particles move faster (gain kinetic energy) and spread far apart as they gain energy.
What is condensation?
A gas cooling and turning into a liquid.
Paragraph 1: Claim, evidence #1, reasoning #1.
Paragraph 2: Evidence #2, reasoning #2, therefore statement.
Why does a moving baseball have more kinetic energy than a slow-rolling one?
Because the faster speed gives it more kinetic energy.
Which system is better at maintaining thermal energy, a closed system or an open system?
A closed system because thermal energy cannot transfer in and out as easily.
How do particles create pressure inside a container?
They hit the walls of the container as they move.
What is melting?
solid to liquid
When taking the Science PT, which section of the test should you spend the most time on?
The CER! You should spend AT LEAST 45 minutes working on your CER.
If thermal energy increases, kinetic energy ________.
increases
If kinetic energy decreases, thermal energy _______.
decreases
Which state of matter has the highest thermal and kinetic energy?
Gas
How do particles behave in all matter?
They are always moving, even in solids.
Why is staying calm important and why is getting enough sleep the night before AND eating breakfast important?
Rest, fuel, and being calm all help your brain think more clearly.