Use of PBS Learning Media website and Flocabulary video through educational public use.
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Answer the questions below by using the Interactive Website.
If the website doesn't appear within the Formative, please open it in a new tab using this backup link: https://contrib.pbslearningmedia.org/WGBH/conv16/conv16-int-thermalenergy/index.html#/intro
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Question 13
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Briefly and in your own words, how does the flame from a gas stove heat a pot?
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Question 15
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Briefly and in your own words, how does a hot pot heat water?
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Briefly and in your own words, how does a hot pot and boiling water heat the air around it?
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Question 20
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What keeps our planet at a temperature that can support life?
Answer by correctly using the words Conduction, Convection, and Radiation.
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Question 28
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Question 29
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How can your house be designed to take advantage of the ways that thermal energy is transferred?
Explain in at least three sentences.
Use the words Conduction, Convection, and Radiation.
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Finish this definition by typing.
Conduction is _______ .
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Finish this definition by typing.
Convection is _______.
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Radiation is when _______.
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Briefly and in your own words, how can you stay cool on a hot day?
When cooking on a gas stove with a pan, heat conducts from the burning gas into the pan, then transfers from the pan into the food on the pan.
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What is an insulator?
A material that is naturally cold.
A material that is a poor conductor of heat.
A material that is a good conductor of heat.
A material that is naturally hot.
If it's a bad conductor insulating is what it's good for.
True
False
If it's a bad insulator conducting is what it's good for.
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Thermal Energy, "heat", just wants to move from hot to cold.
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Things get warmer when molecules have less thermal energy.
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Things get colder when molecules have less thermal energy.
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Match the scientific vocabulary word to it's best definition.
Temperature
The energy within a quantity of a substance.
Thermal Energy
The energy of motion or movement.
Three Forms of Thermal Energy
The average kinetic energy of a substance's molecular particles.
Kinetic Energy
The measure of the flow or transfer of Thermal Energy.
Heat
Conduction, Convection, and Radiation
What is Conduction?
The transfer of thermal energy through the flow of particles in a liquid or gas.
The flow of thermal energy from object to object, even though empty space.
The transfer of thermal energy through direct contact.
What is Convection?
The transfer of thermal energy through direct contact.
The flow of thermal energy from object to object, even though empty space.
The transfer of thermal energy through the flow of particles in a liquid or gas.
What is Radiation?
The transfer of thermal energy through the flow of particles in a liquid or gas.
The transfer of thermal energy through direct contact.
The flow of thermal energy from object to object, even though empty space.
Why are some parts of the planet warmer than others?
The Sun warms Earth unevenly, and the areas near the Equator are heated more intensely than the polar areas. Convection currents in the atmosphere distribute thermal energy around Earth.
Earth also emits thermal energy into space.
Air is not a very good conductor of thermal energy because the particles in the gases that make up the atmosphere are far apart.
Some solar radiation is reflected back toward space by clouds and Earth's surface.
How does transfer of thermal energy relate to earthquakes and volcanoes?
During the day, solar radiation warms the ground and water, which then heat up the air touching them.
Global ocean circulation also distributes thermal energy around Earth.
Greenhouse gases trap some thermal energy in the atmosphere.
Mantle convection carries thermal energy from Earth's interior to its surface and drives plate tectonics, causing phenomena like earthquakes and volcanoes.
Why might you feel warmer?
Thermal energy radiates from a campfire.
You were snuggling with your boih or gurl.
The marshmallow held near the fire also gains thermal energy from radiation.
You forgot to take of your sweater, duh.
What causes the marshmallow to melt?
The warmth you feel when sitting near a campfire is primarily from the transfer of thermal energy by radiation.
Metal is a good conductor of thermal energy. It would quickly become too hot to hold and burn the marshmallow.
As the air around the campfire is heated and becomes less dense, it rises and moves upward, creating a convection current that transfers heat.
The marshmallow held near the fire gains thermal energy from radiation, which toasts the marshmallow.
What should you use to hold the marshmallow over the fire?
A short and poor conductor of thermal energy like a wooden twig.
A long and good conductor of thermal energy like a metal rod.
A short and good conductor of thermal energy like a metal fork.
A long and poor conductor of thermal energy like a wooden stick.
Why does smoke rise from the fire?
The marshmallow held near the fire also gains thermal energy from radiation, which toasts the marshmallow.
As the air around the campfire is heated and becomes less dense, it rises and moves upward, creating a convection current that transfers heat.
A metal rod would not be a good choice for roasting marshmallows because metal is a good conductor of thermal energy. It would quickly become too hot to hold!
A metal rod would not be a good choice for roasting marshmallows because metal is a good conductor of thermal energy. It would quickly become too hot to hold!
What kinds of floor surfaces feel more comfortable on a really hot day?
Radiation from the Sun transfers thermal energy to a person standing in sunlight.
A fan increases the flow of air in a room and can help increase the transfer of thermal energy from your body to the air. Moving air increases the rate of heat loss from the evaporation of sweat.
You may prefer to be on the ground floor rather than upstairs, because warm air rises through convection. Where the air is cooler downstairs, more thermal energy will transfer from your body to the air.
You might prefer standing on a tile floor rather than a rug. Tile is a better conductor of thermal energy, so it’s easier for heat to flow from your feet into the tile. This conduction makes the tile feel cool.
How does your body react to the heat?
When your body is too hot, it increases blood flow to your skin, where heat loss occurs. Moving air increases the rate of heat loss from the evaporation of sweat.
Radiation from the Sun transfers thermal energy to a person standing in sunlight.
Tile is a better conductor of thermal energy, so it’s easier for heat to flow from your feet into the tile. This conduction makes the tile feel cool.
Where the air is cooler downstairs, more thermal energy will transfer from your body to the air.
Where can you go to cool off?
Conduction takes place at your skin’s surface, as thermal energy is transferred from your body to the air or anything in contact with your skin.
Staying in shady areas can help keep you cooler on a hot day.
When your body is too hot, it increases blood flow to your skin, where heat loss occurs.
Your body also loses thermal energy to the environment by radiation.