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Physical Science > Chapter 13 > Flashcards

Chapter 13 Flashcards

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0
Q

The movement of fluids due to density differences caused by temperature variations

A

Convection

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1
Q

When one feels a warm oven, the sensation of warmth is the result of

A

Energy transfer

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2
Q

Temperature is

A

All of the above

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3
Q

The total amount of energy (both usable and unusable) in any process

A

Remains constant

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4
Q

Energy transferred as electromagnetic waves

A

Radiation

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5
Q

The temperature at which all molecular motion stops is

A

0 degrees K

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6
Q

The energy transferred between objects with different temperatures is

A

Heat

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7
Q

What is 37.0 degrees Celsius on the Fahrenheit scale?

A

98.6 degrees F

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8
Q

As the kinetic energy of the molecules in a substance increases, the

A

Temperature of the substance increases

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9
Q

Energy from the sun reaches earth by

A

Radiation only

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10
Q

Condensation causes a _________ effect to the surroundings

A

Heating

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11
Q

Temperature is a measure of the average __________ energy of an objects particles

A

Kinetic

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12
Q

A material that is a poor conductor of energy

A

Insulator

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13
Q

A cold- blooded reptile basks on a warm rock in the sun. It’s body is warmed by

A

Both (a) and (b)

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14
Q

When energy is transformed, the amount of usable energy

A

Decreases

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15
Q

The Fahrenheit temperature scale is defined by which of the following temperatures?

A

Water boils at 212 degrees and freezes at 32 degrees

16
Q

What is -175 degreesC on the Kelvin scale?

A

98 K

17
Q

Using the table, determine which substance can absorb the most energy in a temperature increase of 1K

A

Liquid water

18
Q

Which substance has a specific heat approximately 10 times greater then the specific heat of silver?

A

Ethanol

19
Q

Suppose a fixed number of joules of energy is added as heat to 1KG of the substances listed below. For which substance will rise in temperature be the least?

A

Water

20
Q

Which of the following is the name of temperature scale?

A

All of these

21
Q

Solar panels gather _______ energy from the sun

A

Radiated

22
Q

Which of the following substance is the best conductor of transferring energy as heat?

A

Iron

23
Q

A drill bit will get hot after extended use. This is because of

A

Mechanical heating

24
Q

Which of these is made from an insulating material?

A

Styrofoam cup

25
Q

Which method of energy transfer does not involve movement of matter

A

Radiation

26
Q

According to the first law of thermodynamics

A

The total energy used in any process is conserved

27
Q

A combustion engine uses what kind of energy to do work?

A

Heat

28
Q

A solar heating system the utilizes an electric fan to move warm air throughout a home is called a _______ system

A

Active

29
Q

The transfer of energy by the movement of fluids or gases with different temperatures is called

A

Convection

30
Q

Heat engines use ________ to convert potential chemical energy and internal kinetic energy into mechanical energy

A

Combustion

31
Q

The transfer of energy caused by the collision of molecules is called

A

Conduction

32
Q

In an air conditioner,a substance that easily evaporates and condenses is used to transfer energy from a room to the air outside. When the substance evaporates

A

It absorbs energy as heat from the surrounding air.

33
Q

Convection currents rise in air because

A

Cool air descends and hot air rises

34
Q

Which of the following statements is true?

A

Energy as heat flows from a higher temperature to a lower temperature

35
Q

10 KG of a substance underwent a 3 K change in temperature when 11500 J of energy as heat was added to the substance. What is the substance?

A

Copper

36
Q

Which of the following temperatures is impossible?

A

-20 K

37
Q

Heat always moves from an object of _______ temperature to an object of _______ temperature

A

Higher, lower

38
Q

__________ describes how much energy is required to raise an object temperature

A

Specific heat

Physical Science (6 decks)

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