Grade 10 · Science · Chemistry

10th grade The four laws of thermodynamics in everyday life worksheet

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The four laws of thermodynamics in everyday life

Grade 10 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

Dry ice turns to gas at -78.5 °C. How many kelvins above absolute zero is that, Ari?
Liquid nitrogen boils at -195.8 °C. How many kelvins above absolute zero is that, Bo?
Helium boils at -268.93 °C. How many kelvins above absolute zero is that, Esme?
4.
"Energy in equals energy out plus energy stored" is which law, Jun?
- The second law
- The first law
- The third law
5.
Why can't a car engine turn all of its fuel's heat into motion, Kira?
- Engines run below absolute zero
- Energy is destroyed as it burns
- Some heat must flow to the cooler surroundings
6.
Why are kelvins used in thermodynamics, Luz?
- Kelvins are warmer than °C
- 0 K is absolute zero
- Kelvins can be negative
7.
Noah says a phone battery destroys energy as it runs down. Agree or disagree?
- Agree: phones make energy vanish
- Agree: the battery uses the energy up
- Disagree: the energy changes form
8.
Pia says the second law makes it impossible to tidy a messy room. Agree or disagree?
- Disagree: tidying uses outside energy
- Agree: rooms are isolated systems
- Agree: disorder can't be lowered anywhere
9.
Which change lowers a substance's entropy, Tala?
- Water boiling
- Water freezing
- Ice melting
10.
Salt dissolves in water. What usually happens to entropy, Zee?
- It decreases
- It increases
- It drops to zero

The four laws of thermodynamics in everyday life. Every version has 10 questions, and the answer key prints on the second page.

I can state the zeroth law and explain how a thermometer works.
I can use the first law, ΔU = Q − W, and say energy changes form but is never used up.
I can use the second law: heat flows hot to cold, and the universe's entropy grows.
I can use the third law and convert temperatures to kelvins above absolute zero.

Standard: supports HS-PS3-4

thermal equilibrium: Equal temperatures, so no net heat flows

internal energy, U: The total energy of a system's particles

entropy: A measure of disorder, or how spread out energy and particles are

absolute zero: 0 K, −273.15 °C

isolated system: One that swaps no energy or matter with its surroundings

Your child added the work. Work the system does uses up some of the heat it took in, so ΔU = Q − W.

Your child added the heat the gas gave off. Heat leaving the system lowers its energy, so subtract it.

Your child subtracted 273.15. To go from °C to kelvins, add 273.15; kelvins are never negative.

What is the most common mistake with the four laws of thermodynamics in everyday life?

Your child added the work. Work the system does uses up some of the heat it took in, so ΔU = Q − W.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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