Download Heat and Energy Review

Heat and Energy Review
Types of Energy
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Heat
Light
Sound
Electrical
Solar (Sun)
Chemical
Wind
Water
Magnetic
Mechanical
Nuclear
Vocabulary
Thermal Energy – Energy due to moving
particles
 Conduction and Conductor is usually metal
that allows heat or electricity to move
through easily
 Insulator keeps heat or electricity from
moving (plastic, styrofoam are good
insulators)
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Convection Current the flow of heat
energy. When hot air rises (hot air is less
dense) it pushes the cold air down
creating a circular pattern.
 Radiation Energy comes from the sun also
called Solar Energy
 Static Electricity happens when positive
and negative charges are no longer in
balance. (charged particles – positive
clusters are on the top and negative
particles are on the bottom.
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Electric Current an electric charge that
flows from one place to another.
 Closed Circuit is a loop with NO breaks
through which electric current can flow
(Hint: this is the meaning of closed)
 Series Circuit this is a simple circuit where
there is only 1 path for the electricity to
flow. Example Christmas tree lights..when
one goes out they all go out
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Parallel Circuit has 2 or more paths for the
electrical current to go. This allows the
lights to stay lit even if one light goes out.
 Magnetism is a force that acts on moving
electric charge and magnetic material that
are near a magnet
 Magnetic field goes out in all directions
 Magnetic Poles all magnets have a north
and south pole (North and south attract)
(North and North push away – repell)
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Electromagnets
Electromagnets are supercharged
magnets. The magnet is charged through
electricity. See page 387
 An electromagnet is a coil of wire with
many loops through which an electric
current (usually from a battery) passes
through.
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Other forms of Electricity
Wind
 Water - also known as Hydroelectric
Power (Niagra Falls, Hoover Dam)
 Sound is a form of energy that travels in
WAVES Sound can travel through solids,
liquids and gases
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Sound Energy
Crest
Crest
Trough
Crest
Trough
Wavelength
Trough
Light Energy
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Reflection when light rays bounce
Absorption when an object takes in the light
wave
Transparent materials in which most of the light
energy passes through the material (glass)
Translucent let some light rays pass through but
forces the rest of the light rays scatter
Opaque no light rays can pass
Refraction bends light for example a prism and
the human eye
Check what you know
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What two forms of energy does a camp
fire provide
– A.
– B.
– C.
– D.
Light and fire
Light and heat
Wood and fire
Heat and wood
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Which tool would you use to check the
temperature of a light bulb.
– A.
– B.
– C.
– D.
beaker
Thermometer
Graduated Cylinder
Triple Beam Balance
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A television’s electrical energy is
transformed into
– A.
– B.
– C.
– D.
light and sound
Magnetic and light
Electrical and solar (sun)
Chemical and sound
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An electromagnet transforms energy from
__________ to ____________
– A.
– B.
– C.
– D.
Nuclear to chemical
Thermal to magnetic
Electrical to magnetic
Electrical to mechanical
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A wind mill takes the wind and turns it
into ________________energy.
– A.
– B.
– C.
– D.
solar (sun)
nuclear
magnetic
mechanical
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The energy that special panels that are
put on a roof to collect are called.
– A.
– B.
– C.
– D.
solar panels
thermal panels
magnetic panels
electrical panels
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What tool would you use when you are
testing the energy of hot chocolate.
– A.
– B.
– C.
– D.
beaker
metric ruler
thermometer
Triple beam balance
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What material would you use to build a
solar oven.
– A.
– B.
– C.
– D.
foil
wood
plastic wrap
wool blanket
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What type of energy flows out of a battery
– A.
– B.
– C.
– D.
light
thermal
electrical
magnetic
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A waterwheel provides what type of
energy
– A.
– B.
– C.
– D.
windmills
solar cells
geothermal
hydroelectric
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A solar calculator gets its energy from
where?
– A.
– B.
– C.
– D.
heat
sound
sunlight
batteries