Science 6B Unit 2 Lessons 2-5 Thermal Energy

Rank the phases of matter from the one with the least kinetic energy to the greatest kinetic energy for the particles in the subst

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Which option describes the particles of water as the liquid water actively boils?

• the particles will lose kinetic energy & increase temp during boiling

• the particles have the same ave. kinetic energy and the same temp during boiling

• the particles will lose kinetic energy & decrease temp during boiling

• the particles will have the same ave. kinetic energy & decrease temp during boiling

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What does temperature measure?

• the total energy of particles

• the empty space between the particles

• the average kinetic energy of the particles

• the heat of the particles

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Which is the best interpretation of the two flat portions of the graph?

• these show where the thermal energy does not exsist

• these show where temperature is 0 degrees celcius

• these show where changes of state of matter is occurring

• these show where kinetic energy is increasing

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What is kinetic energy?

• energy of motion

• stored energy

• thermal energy

• the energy of radiation

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A fisherman in a boat is drinking a cup of hot coffee. The large lake below his boat is full of cold water. Which statement is an accurate comparison of the lake water and the coffee?

• coffee will have more total thermal energy, but lake particles will be moving faster

• coffee will have more total thermal energy, and the coffee particles will move faster

• lake will have more total thermal energy, and lake particles will be moving faster

• lake will have more total thermal energy, but particles in the coffee will be moving faster

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NGSS.MS-PS1-4

The gallium in the image is melting in the person’s hand. Which changes will occur on a microscopic level? 

• the gallium atoms will increase in temperature

• the gallium atoms will gain kinetic energy

• the gallium atoms will gain potential energy, moving freely from each other

• the gallium atoms will be moving faster on average

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Which object will have particles with the highest average kinetic energy?

Responses

• a drop of water at 90 degrees C

• water at 40 degrees C in a swimming pool

• water at 37 degrees in a glass

• an iceberg at 0 degrees C.

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As water becomes warmer, boils and then becomes water vapor (steam), what happens to its kinetic and potential energies?

• the particles will gain potential energy as it heats up, but the kinetic energy of the particles will stay the same

• the particles gain both potential and kinetic energy

• the kinetic and potential energies of the particles will stay the same

• the particles gain kinetic energy as it heats up, but the potenial energy of the particles will stay the same

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Which of these shows the best example of gravitational potential energy?

• skateboarding fast at the bottom of a half-pipe

• a book on a high shelf

• a molecule of glucose

• a stretched rubber band

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