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6.2 Thermal Energy Lessons 4-6 Quiz

Last updated about 1 year ago

23 questions

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Question 1

1.

Which state of matter has particles that are tightly packed together?

Gas

Vapor

Solid

Liquid

Question 2

2.

Which statement is true about gas particles?

They are always in a fixed shape.

They are all touching each other.

They have a lot of space between them.

They cannot move.

Question 3

3.

Which state of matter takes the shape of its container?

Gas

Condensation

Solid

Liquid

Question 4

4.

What is happening to the liquid water that can explain why the mass of the cup system deceases over time?

The water molecules bond with air particles, doubling the mass.

The water molecules evaporate, leaving the system and reducing mass.

The water turns into gas and increases the mass of the system.

The water solidifies and makes the cup heavier.

Question 5

5.

What is a practical wa to measure if mass is lost from the cup systems during the experiement?

By using a thermometer to check the lid's humidity

By observing the color change of the water

By weighing the cups before and after the experiement

By checking the temperature regularly

Question 6

6.

When discussing other methods to determine if the water amount decreases without a scale, which method is most reliable?

Observing the water level over time using a marked container

Listening to the container to check for sounds

Smelling the water to see if it becomes stronger

Shaking the container to feel for weight changes

Question 7

7.

If we completely sealed off the cup so no matter could get in or out, why would the temperature of the liquid inside still change?

The seal would cause the liquid to gain mass, changing temperature.

Heat transfer still occurs through the cup walls, influencing temperature over time.

The liquid would create internal pressure forcing temperature change.

Evaporation would still happen within the sealed cup.

Question 8

8.

How could time-lapse or slow-motion videos help if you didn't have a scale for measuring mass?

They make it easier to hear the water boiling or freezing.

They can visually show changes in the water level over time, indicating mass loss.

They automatically calculate the data for you, reducing human error.

They help to capture the temperature changes in the liquid correctly.

Question 9

9.

Why do droplets form on the outside of a cold pitcher?

Because the pitcher releases moisture

Because lemonade leaks through the pitcher

Because droplets escape from ice cubes in the pitcher

Because water vapor in the air condenses on the cold surface

Question 10

10.

What should you conclude if the colored water inside does not change the color of the droplets outside?

The cup absorbs the food coloring.

Food coloring does not mix well.

Water outside is from the air, not the cup content.

Water inside the cup is evaporating too quickly.

Question 11

11.

Which experiment setup best confirms the source of the water droplets on the outside of a cup?

Shaking the cup periodically

Adding food coloring to the water inside the cup

Covering the cup with plastic wrap

Heating the cup and observing droplets

Question 12

12.

How can the structure of solid particles explain why water cannot leak through the walls of the cup?

Solid particles dissolve when in contact with water.

Solid particles can move aside to let water pass.

Solid particles are tightly packed, preventing leakage.

Solid particles vibrate and create gaps for water to pass.

Question 13

13.

Why is it important that the mass of the cups was measured immediately after adding the cold water?

To confirm the water's temperature inside the cups

To ensure accurate baseline measurements before any condensation forms

To check if the cups were leaking immediately

To see if the lids prevent immediate mass change

Question 14

14.

What conclusion can be drawn from seeing droplets form on an empty chilled cup?

Ice particles settle outside the chilled cup.

New moisture forms directly on the empty cup.

Condensation is the source of water droplets in the observational setup.

Air particles solidify upon touching the chilled cup.

Question 15

15.

Which cup do you think warmed up more after 10 minutes? Why?

The cup with the old lid because it has a bigger hole.

The cup with the old lid because it's a closed system.

The cup with the new lid because it allows more heat to escape.

The cup with the new lid because it keeps heat in better.

Question 16

16.

In what units was the temperature of the water measured?

Fahrenheit

Liters

Degrees Celsius

Kelvin

Question 17

17.

What happens to the water particles in the cup with the new lid compared to the old lid?

Fewer water particles evaporate.

The water particles grow larger.

The water particles stay more still.

More water particles leave the system through the larger opening.

Question 18

18.

Imagine we could zoom in to a point where the liquid meets the wall of the cup. What do we think is happening to water molecules there?

The molecules are absorbed by the wall of the cup.

They evaporate instantly.

The molecules bounce off the cup wall and stay in the liquid.

The molecules pass through the wall.

Question 19

19.

How does this model help you visualize why water molecules can move freely between other water molecules but can't go through the particles the plastic cup wall is made of?

It shows that water molecules are too large.

It demonstrates the temperature efffects on water.

It illustrates the flexibility of the plastic.

It shows that the particles in the plastic are closely packed.

Question 20

20.

What is happening to water molecules in the air where it meets the lid of the cup? Explain your reasoning.

Question 21

21.

Why can'twater from the inside leak through the walls of the cup? Explain your reasoning.

Question 22

22.

What is the difference between a closed system and an open system? Explain your reasoning.

Question 23

23.

Think about times you have gotten a hot drink. What are some strategies cup designers have used to maintain the temperature for longer times? Explain your reasoning.