AKS 7c-7e Review

Presentation

•

Physics

•

8th Grade

•

Hard

Marissa Brown

FREE Resource

20 Slides • 25 Questions

Thermal Energy & Specific Heat

Convection, Conduction, Radiation

Heat Transfers

Multiple Choice

Hot chocolate is stirred with a spoon and the spoon gets hot.

Conduction

Convection

Radiation

Conduction

Transfer of heat by direct touch. The spoon is directly touching the liquid.

Multiple Choice

The Sun warms your skin on a cold day.

Conduction

Convection

Radiation

Transfer of heat through electromagnetic waves. On a sunny day, you can feel the warmth of the Sun's rays on your skin.

Multiple Choice

Macaroni rises and falls in a pot of heated water.

Conduction

Convection

Radiation

Convection

Transfer of energy through heat rising through air or a liquid.

Conduction

Heat transfer through direct touch.

Radiation

Transfer of heat through electromagnetic waves.

Convection

Transfer of energy through heat rising through air or a liquid.

Multiple Choice

You burn your hand by touching a hot stove.

Conduction

Convection

Radiation

Multiple Choice

Warming your feet in front of a fire.

Conduction

Convection

Radiation

Multiple Choice

Hot air balloon rises.

Conduction

Convection

Radiation

Multiple Choice

The air near the ceiling in a room is warmer than the air near the floor.

Conduction

Convection

Radiation

Convection

Transfer of energy through heat rising through air or a liquid.

Multiple Choice

The material in a lava lamp rises and falls.

Conduction

Convection

Radiation

Convection

Transfer of energy through heat rising through air or a liquid.

Multiple Choice

The sidewalk increases in temperature on a sunny day.

Conduction

Convection

Radiation

Multiple Choice

What is a conductor?

a material that heat moves through easily

a material that heat does not move through easily

a material that turns cold when heated

a tool for measuring temperature

Multiple Choice

Which of these is a better conductor?

Multiple Choice

Hot water rises and cold water sinks. Is this:

Convection

Conduction

Radiation

Multiple Choice

The sun shines down on this family as the play on the beach.

conduction

convection

radiation

Multiple Select

Select all that apply. Which of the following are examples of radiation?

microwave

Sunlight

Fire

touching a piece of hot metal

Match

Match these heat transfers

Conduction

Convection

Radiation

Match

radiation

radiation AND conduction

convection

Multiple Select

Cold Pack on Person

Heat is transferred from the cold pack to the person.

Heat is transferred from the person to the cold pack

The cold pack is getting warmer. The person is getting colder.

The cold pack is getting colder. The person is getting warmer.

Metals are usually good thermal conductors, which is why metal pots are used for cooking. The specific heat of a substance (is defined as the amount of heat required to raise the temperature of 1 gram of a substance by 1C. Water has a vital role in global and local temperature regulation. This can be explained by water’s specific heat, which is 4.186 joules per gram1 degree Celsius or 4.186 J/gC. The specific heat of water is higher than other common matter.

Specific Heat

Different objects have different thermal properties. Objects that do not easily transfer thermal energy are called insulators. Wood, for example, is commonly used as an insulator. Thick paper, which contains wood fibers, can also be applied as an insulator. For example, hot coffee from a cafe might have a paper wrapper around the cup to protect the drinker’s hand from the heat inside. Objects that can transfer thermal energy easily are called conductors.

Drag and Drop

Which will heat up the fastest?

Drag these tiles and drop them in the correct blank above

copper

granite

iron

basalt

Match

Rank the materials in order of slowest to heat up to fastest to heat up.

water

lead

granite

iron

Multiple Choice

Which of the following best explains why the sand at the beach is hotter than the water?

Sand has a higher specific heat than water.

Sand has a lower specific heat than water.

Sand has a greater mass than water.

Water has a greater mass than sand.

Multiple Choice

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same amount of thermal energy. What material would be the coolest after being heated?

Copper

Carbon Steel

Zinc

Stainless Steel

Multiple Choice

Heat will always transfer from the ___________ object to the ________ object.

The hottest object to the coolest object.

The coolest object to the hottest object.

The solid object to the liquid object.

The liquid object to the solid object.

Drag and Drop

Heat flows from an area of

temperature to an area of

temperature.

Drag these tiles and drop them in the correct blank above

high

low

Multiple Choice

The data table here provides information on the specific heat of four different kinds of metal.

Which of the following conclusions is supported by the data in the table provided?

Aluminum cookware will heat up more quickly than cookware made from the other metals in the table.

Cast iron cookware distributes heat more evenly than cookware made from the other metals in the table.

Copper cookware will heat up more quickly than cookware made from the other metals in the table.

Stainless steel cookware distributes heat more evenly than cookware made from the other metals in the table.

Multiple Choice

The data table provides information on the specific heat of four different materials.

Which of the following is the most accurate comparison of these materials, assuming equal amounts (mass) of each?

Rubber would make a better insulator than cork.

Of the materials listed, cork would make the best insulator.

Rubber would make a better insulator than paper.

Of the materials listed, aluminum would make the best insulator.

Thermal Energy & Specific Heat

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