6.2 Thermal Energy Lessons 1- 10

True or False? ALL matter has THERMAL energy, even matter that feels cold.

• True

• False

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When a system is cooling down, energy is __.

• transferring out of it

• transferring into it

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TRUE OR FALSE: Energy transfers from hotter objects to colder ones.

• True

• False

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NGSS.HS-PS3-4

When a system is warming up, energy is _____.

• transferring into it

• transferring out of it

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NGSS.MS-PS3-4

When gas molecules turn into a liquid it is called _____.

• condensation

• evaporation

• melting

• freezing

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Why are cups, thermoses, and coolers able to keep materials in them colder or hotter if they have a lid?

• Lids help create a closed system

• Lids come with each of these systems.

• Lids are always insulated.

• Lids allow you to get into the container to check the temperature.

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Why do BOTH hot and cold liquids eventually reach ROOM temperature if left in the same environment?

• They are both in open systems and loose mass.

• The liquids either gain or loose energy until they have the same amount as the particles in the room.

• The cold leaves cold liquid and enters the system with hot liquid.

• Light enters each system equally causing the temperatures to balance.

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What evidence did the computer particle simulation show us about energy?

• Energy transfers from faster to slower particles.

• Energy transfers when particles collide.

• Particles in a sample of matter can have different amounts of energy.

• All of these ideas were supported in the simulation.

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What happens when two solids of different temperature touch as shown by our computer simulation?

• The energy transfers from the colder matter to the hotter matter.

• The energy transfers from the hotter matter to the colder matter.

• The energy remains constant in each solid because the solid is a closed system.

• All the energy eventually leaves both systems.

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SpongeBob wants to know if an expensive vacuum cup, like the one Mr. Krabs has, is worth the extra money or will a double wall cup, like Patrick has, work just as well at keeping his kelp shake cold but for less money. He decides to test both cups with 450 mLs of hot water heated to 700 degrees Fahrenheit by the nearest hydrothermal vent (hot ocean vent).* He will leave both cups in his pineapple under the sea for 20 minutes. Gary will test the temperatures of both cups at the start and finish. He will compare these temps to see which had a greater change.

What is the INDEPENDENT variable in SpongeBob's test?

• Ocean vent water versus Cold ocean water

• Lower cost versus Higher cost

• Vacuum cup versus Double wall cup

• Cold kelp shake versus Hot kelp shake

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