Kinetic Energy and Heat
What is kinetic energy?
Energy of movement
What are the three things that can happen to light when it hits a surface?
Reflect, transmit, absorb
What are the tiny pieces that make up matter?
Particles
How are particles arranged in a solid?
Tightly packed
What is the difference between a model and a diagram?
Models describe all parts AND process including action words, symbols, and detailed desriptions.
What happens to a particle that gains kinetic energy in a collision?
It speeds up
What type of surface reflects light?
Shiny/white surface
How does the kinetic energy of particles in a solid change as it heats up?
It increases
What happens to liquid particles as they gain kinetic energy?
They move faster and some evaporate
What is a "key" on a model?
It shows the meaning of certain symbols or images on your model.
How does kinetic energy transfer between particles?
Through collisions
What happens to the particles of a substance when it absorbs light?
They gain energy and move faster
Can kinetic energy transfer between particles of different states of matter? How?
Yes - Collisions of particles
How are particles arranged in a gas?
Freely, spread far apart
When asked for a "Zoom-in" of a situation, what does that mean?
Imagine you have a very strong microscope in order to view the area of interest (in this case, the particles and molecules). You should draw all the important parts and processes that are occuring TO and AROUND the area of interest.
What is the relationship between temperature and kinetic energy?
Higher temperature means higher average kinetic energy
Can the temperature of a substance increase without light?
Yes, if heat is transferred from a warmer substance
How does the number of particles in contact affect heat transfer?
More particles in contact means more heat transfer
Can particles of matter travel through a solid like a plastic cup?
No
If asked to provide evidence from class, what are some examples you can use?
Look around the room!
How does temperature difference affect heat transfer?
Larger temperature difference leads to faster heat transfer
What happens to the energy of absorbed light?
It is transferred to particles as kinetic energy
Do all particles in a sample of matter have the same kinetic energy at a given moment? Why?
No, they have different amounts of kinetic energy,collisions
What process occurs when there is a temperature difference between a solid surface and the water molecules in the air around the surface?
Condensation
What should you do if you are unsure of how to answer a question on a test?
Re-read the prompt and any other information provided to you about the question. If you are still confused, ask an adult in the room.