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Sceicne > Untitled Deck > Flashcards

Untitled Deck Flashcards

1
Q

What is the total energy of all particles in an object?

A

Thermal energy

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2
Q

What is energy transferred from one object to another called?

A

Heat

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3
Q

What happens to temperature when the kinetic energy of particles increases?

A

Temperature increases

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4
Q

What instrument can be used to measure temperature?

A

Thermometer

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5
Q

How does larger mass affect heating time?

A

Larger mass = longer time to heat up

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6
Q

How does heat transfer from one particle to another, by direct contract

A

conduction

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7
Q

What happens to energy when it goes from one object to another?

A

Energy is conserved

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8
Q

How does air current transfer energy?

A

By convection

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9
Q

What are materials that don’t conduct heat well called?

A

Insulators (e.g., wool)

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10
Q

What are materials that conduct heat well called?

A

Conductors (e.g., metals)

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11
Q

What is the amount of energy per 1kg needed to increase the temperature of a material by 1 K?

A

Specific heat

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12
Q

What is the formula to convert Kelvin to Celsius?

A

C - 273 = x

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13
Q

If C = 297, what is the result of 297 - 273?

A

24

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14
Q

What is the specific heat equation?

A

Q = Mass x Specific Heat x Change in Temp

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15
Q

How much heat is needed to raise the temperature of 100g of water by 85C if the specific heat of water is 4.18 (g)?

A

35530

Calculation: 100 x 85 x 4.18 = 35530

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16
Q

What happens to particles when they decrease in temperature?

A

Objects contract

17
Q

What do conduction and convection require?

A

A medium

18
Q

What is thermal energy also called?

A

Internal energy

19
Q

What determines thermal energy?

A

Temperature and amount of matter

20
Q

Why does sand feel hotter than water on the beach?

A

Sand has a lower specific heat

Sceicne (11 decks)

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