A puddle of water on the sidewalk evaporates and becomes water vapor. The water vapor travels through the air and comes into contact with a cold mirror. What happens next? Choose all that apply.
A. It becomes a solid.
B. It becomes a liquid.
C. The molecules gain energy.
D. The molecules lose energy.
What does "it" mean in the answer choices? It could be the water vapor, the air, the mirror. And how cold is the mirror? That makes a difference. Not a very good question. Now very good answer choices. Now very well thought out. I'm sure the question is what happens to the water. Also, I'm sure the mirror is is not freezing. Based on those assumptions the answers are
b and d. The water vapor will condense on the cool mirror and they will lose kinetic energy since the vapor molecules can move more or less freely and the liquid water cannot.
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________________________________________________________Practice (pages 4 - 10).
Conduct a short research project using the chart below. Refer to the chart on page 4 of 10 for specific information. Then once you reach page 10, complete the chart.
Research Project Steps
Details to Include
My (short) Research Project
Lesson 3 - Search Terms
Key Words
Define the following terms. (Do not copy and paste)
Search terms -
Search engine -
Check In (Page 3 of 10)
Answer the following questions after completing the check in on page 3 of 10.
What is the best way to create effective search terms?
Explain how a search engine responds to search terms.
How can search engines help you find information from reliable sources?
Practice (page 4 of 10).
Directions Read the paragraph about Xavier. Then answer the questions below.
What search terms could Xavier use to find helpful information?
Why would Xavier not want to include sugary foods as search terms?
Suppose that Xavier’s first online search provided information from unreliable sources. How could he use search terms to find more reliable sources?
Summarize what you learned from the video on page 5 of 10. Use your sentences from the Check In activity on page 6 of 10.
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To understand what happens next when water vapor comes into contact with a cold mirror, let's break down the process and analyze each answer choice:
A. It becomes a solid: This option is not applicable because water vapor does not directly transform into a solid state when it comes into contact with a cold mirror.
B. It becomes a liquid: This option is not applicable either as the change from water vapor to liquid water requires a process called condensation, which typically occurs when water vapor is cooled further beyond its dew point.
C. The molecules gain energy: This option is also not accurate since when water vapor comes into contact with a cold surface like a mirror, it tends to lose energy rather than gain energy.
D. The molecules lose energy: This option is correct. When water vapor encounters the cold surface of a mirror, the molecules of water vapor lose energy. This energy loss causes the water vapor to undergo a process called condensation, where the water vapor transforms back into liquid water. This condensation occurs because the mirror's surface is colder than the dew point temperature, causing the water vapor to release its heat energy and form liquid water droplets on the mirror's surface.
Therefore, the correct answer is option D: The molecules lose energy.