Energy Unit
Week 32
Directions
1. Prepare your desk for science.
• Science notebook
2. Use voice level 2 (conversation) to discuss the
following: “What is energy? What are the
various forms of energy? What are their
definitions?”
Energy
• Energy is the ability to change something or
do work
– Work: Using force in order to move an object a
certain distance
• Energy is what makes matter move or change
Types: Thermal, Electrical, Sound, Light
Targets & Warm Up
Targets:
• Students will understand how thermal
energy is transferred.
• Students will distinguish between
conductors and insulators.
Warm Up: What do you know about energy?
Table of Contents
Date
5-5-15
Title
Thermal Energy
Page
74
Once you are finished with the Table of Contents,
go to page 73 and add the title and date to the
top of the page.
Energy in Matter
Rub your hands together. What happens?
You just used energy to make heat
Energy in Matter
• The particles in matter are always
moving. Why do particles move?
– Because they have energy!
• Do all particles move in the same way?
– As an object becomes hotter, its particles move
faster
– As an object becomes colder, its particles move
slower
Thermal Energy
• Thermal energy is energy due to moving
particles that make up matter.
• We feel the flow of thermal energy as
heat.
How Does Heat Move?
• Thermal energy flows from
something warm to something
cool.
• The transfer of thermal energy
between matter with different
temperatures is heat.
• A heat source is anything that
gives off energy that particles
of matter can take in.
How Does Heat Move?
Radiation
Convection
Conduction
Radiation
• The transmission of energy as light
• Objects that send out light also send out heat
• Can travel through matter or empty space
Radiation
Convection
• The transfer of heat by the circulation or
movement of the heated parts of a liquid or gas
– Heated air goes up (less dense)
– Cooler air goes down (more dense)
Convection
Conduction
• The transfer of heat energy by one object
touching another
• Occurs between two solids
This is a spatula that is used to cook food.
Why does it have a wooden handle?
A Conduction Experiment (pg. 354)
Conductors vs. Insulators (pg. 355)
Conductor: A material that readily allows heat
to move
Insulator: A material that limits the amount of
heat that passes through it
Conductors
•
•
•
•
•
•
•
Copper
Aluminum
Gold
Silver
Steel
Iron
Water
Insulators
•
•
•
•
•
•
•
Glass
Ceramic
Plastic
Rubber
Wood
Cotton
Paper
StudyJams Video
http://studyjams.scholastic.com/studyjams/jam
s/science/energy-light-sound/heat.htm
Pay attention to:
• Three types of heat energy transfer
• Conductors & insulators
Reflection Questions
Think about the items in your kitchen. What are
some conductors you have? What are some
insulators you have? How do you use them?
Targets (Revisited)
•Students will understand how thermal energy is
transferred.
•Students will distinguish between conductors
and insulators.
Homework
Subject
Science
Homework
Heat Energy wksht
Due Date
Wednesday