Transcript Change occurs as energy is transferred.

CHAPTER
NEW CHAPTER
Energy and Change
the BIG idea
Waves and heat flow transfer energy.
1.1 Change occurs as energy is transferred.
1.2 Radiation transfers energy.
1.3 Heat energy flows from warmer to cooler areas.
CHAPTER OUTLINE
CHAPTER RESOURCES
1.1
KEY CONCEPT
CHAPTER HOME
Change occurs as energy is transferred.
CALIFORNIA
Content Standards
6.3.a Students know energy can be carried from one
place to another by heat flow or by waves, including
water, light and sound waves, or by moving objects.
6.3.b Students know that when fuel is consumed,
most of the energy released becomes heat energy.
VOCABULARY
energy
heat energy
temperature
heat flow
conservation of
energy
work
CHAPTER
RESOURCES
SECTION
OUTLINE
1.1
KEY CONCEPT
CHAPTER HOME
Change occurs as energy is transferred.
•Energy is the ability to cause a change.
• Different forms of energy produce changes
in different ways.
• All living things require energy.
• Work transfers energy.
SIMULATION
VOCABULARY
energy
heat energy
temperature
heat flow
conservation of
energy
work
Explore work by lifting virtual
weights.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.1
CHAPTER HOME
KEY CONCEPT
Change occurs as energy is transferred.
Energy from sunlight is transferred to plants
and then to animals.
VOCABULARY
energy
heat energy
temperature
heat flow
conservation of
energy
work
Electromagnetic energy from
the Sun is absorbed by the
grass, which changes it into
chemical energy.
As the cow eats the grass, it gains
chemical energy stored in the
grass. The cow can use some of
this energy to produce milk.
The person gains
chemical energy by eating
foods such as yogurt,
which is made from milk.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.2
KEY CONCEPT
CHAPTER HOME
Radiation transfers energy.
CALIFORNIA
Content Standards
VOCABULARY
radiation
wave
6.3.a Students know energy can be carried from one
place to another by heat flow or by waves, including
water, light and sound waves, or by moving objects.
wavelength
electromagnetic
spectrum
6.3.d Students know heat energy is also transferred
between objects by radiation (radiation can travel
through space).
6.4.b Students know solar energy reaches Earth
through radiation, mostly in the form of visible light.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.2
KEY CONCEPT
CHAPTER HOME
Radiation transfers energy.
Radiation is energy that travels in the form of
electromagnetic waves. A wavelength is the
distance between one wave crest or trough
and the next.
VOCABULARY
radiation
wave
wavelength
electromagnetic
spectrum
CHAPTER
RESOURCES
SECTION
OUTLINE
1.3
KEY CONCEPT
CHAPTER HOME
Heat energy flows from warmer to cooler
areas.
CALIFORNIA
Content Standards
6.3.c Students know heat flows in solids by
conduction (which involves no flow of matter) and in
fluids by conduction and by convection (which
involves flow of matter).
VOCABULARY
conduction
convection
density
convection current
6.4.d Students know convection currents distribute
heat in the atmosphere and oceans.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.3
KEY CONCEPT
CHAPTER HOME
Heat energy flows from warmer to cooler
areas.
Conduction transfers energy by direct contact.
VOCABULARY
conduction
convection
density
convection current
CHAPTER
RESOURCES
Energy from the cocoa is transferred to the mug,
to the gloves, and then to the person’s hands.
SECTION
OUTLINE
1.3
CHAPTER HOME
KEY CONCEPT
Heat energy flows from warmer to cooler
areas.
Convection transfers energy by the motion of a gas or
liquid. The warm ground transfers energy to the air.
Less dense air rises, and denser air sinks.
VOCABULARY
conduction
convection
density
As the air cools, it becomes
denser and starts to sink.
convection current
Warmer, less dense air rises
and is replaced by cooler,
sinking air
Sinking air moves to
replace the rising air.
When this air is
warmed, it will rise
and be replaced too.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.3
KEY CONCEPT
CHAPTER HOME
Heat energy flows from warmer to cooler
areas.
Conduction transfers energy by direct contact.
Convection transfers energy by the motion of a gas or
liquid.
VOCABULARY
conduction
convection
density
convection current
SIMULATION
CLASSZONE.COM
Find out more about convection
currents.
CHAPTER
RESOURCES
SECTION
OUTLINE
1.1
KEY CONCEPT
CHAPTER HOME
Change occurs as energy is transferred.
I. Change occurs as energy is transferred.
A. Life requires energy.
VOCABULARY
energy
heat energy
B. Energy has many forms.
C. Energy moves from one place to another.
D. Energy can change from one form to another.
1. Uses of Energy
2. Conservation of Energy
3. Energy and Work
temperature
heat flow
conservation of
energy
work
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
1.2
KEY CONCEPT
CHAPTER HOME
Radiation transfers energy.
II. Radiation transfers energy.
VOCABULARY
radiation
A. Radiation travels in waves.
1. Energy and Wavelengths
2. Electromagnetic Spectrum
3. Visible Light
wave
wavelength
electromagnetic
spectrum
B. Earth receives radiation from the Sun.
1. Reflection and Absorption in the
Atmosphere
2. Reflection and Absorption at Earth’s
Surface
3. The Sun as an Energy Resource
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
1.3
KEY CONCEPT
CHAPTER HOME
Heat energy flows from warmer to cooler
areas.
III. Heat energy flows from warmer to cooler areas.
A. Heat flow is transfer of energy.
VOCABULARY
conduction
convection
B. Heat flow by conduction requires contact.
density
C. Heat flow by convection involves a flow of
matter.
convection current
1. Density
2. Changes in Density
3. Density and Convection Currents
D. Heat energy can be transferred in different
ways at the same time.
CHAPTER
RESOURCES
KEY CONCEPT
SUMMARY
CHAPTER HOME
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