5-1 What is heat?
Aim = What is heat?
SWBAT: Explain how heat is a form of energy.
heat: energy of particles moving from warmer regions to cooler regions
• At one time, people thought that heat was a physical substance called “caloric.”
• Heat is not a substance, but a form of energy.
• Heat is the total kinetic energy of all the particles in a sample of matter.
• Heat energy moves from a warmer object to a cooler object.
• Scientists know that heat is a form of energy because heat can do work.
Review Questions:
1. Explain: What is caloric?
2. Define: What is heat?
3. Describe: In what direction does heat move?
4. Infer: How do scientists know that heat is a form of energy?
Checking Concepts:
1. At one time, people thought that heat was a substance called _______________.
2. Moving particles have ____________ energy.
3. The energy of particles moving from warmer regions to cooler regions is ___________.
4. Adding heat energy makes particles of matter move __________.
5. For work to be done, something must be _____________.
Thinking Critically
6. Infer: Explain how a piece of wood has kinetic energy.
7. Analyze: Suppose you hit a piece of metal several times with a hammer. What you touch the piece of metal, it feels hot. Explain why the metal gets hot after being hit with the hammer.
8. Hypothesize: Explain what will happen when you place an ice cube in a cup of hot coffee.
SWBAT: Explain how heat is a form of energy.
heat: energy of particles moving from warmer regions to cooler regions
• At one time, people thought that heat was a physical substance called “caloric.”
• Heat is not a substance, but a form of energy.
• Heat is the total kinetic energy of all the particles in a sample of matter.
• Heat energy moves from a warmer object to a cooler object.
• Scientists know that heat is a form of energy because heat can do work.
Review Questions:
1. Explain: What is caloric?
2. Define: What is heat?
3. Describe: In what direction does heat move?
4. Infer: How do scientists know that heat is a form of energy?
Checking Concepts:
1. At one time, people thought that heat was a substance called _______________.
2. Moving particles have ____________ energy.
3. The energy of particles moving from warmer regions to cooler regions is ___________.
4. Adding heat energy makes particles of matter move __________.
5. For work to be done, something must be _____________.
Thinking Critically
6. Infer: Explain how a piece of wood has kinetic energy.
7. Analyze: Suppose you hit a piece of metal several times with a hammer. What you touch the piece of metal, it feels hot. Explain why the metal gets hot after being hit with the hammer.
8. Hypothesize: Explain what will happen when you place an ice cube in a cup of hot coffee.