Printable science worksheet for students to complete while watching the Bill Nye video on the water cycle.

Let’s go step by step through each question using the word bank and what we know about the water cycle.

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1. Water can be a solid, ________, or gas.
Water has three states: solid (ice), liquid (water), and gas (vapor).
→ liquid

2. Water is always ________ around the earth.
The water cycle means water is constantly moving — evaporating, condensing, falling as rain, flowing in rivers, etc.
→ moving

3. Energy from the sun causes water to go back into the air. This is called ________.
When the sun heats water, it turns into vapor and rises — that’s evaporation.
→ evaporation

4. When the water cools and turns back into a liquid, this is known as ________. (think of your cold glass)
When water vapor cools (like on a cold drink glass), it becomes droplets — that’s condensation.
→ condensation

5. Water falling as rain, snow, sleet, or hail is called ________.
That’s the definition of precipitation.
→ precipitation

6. Everything in the universe is made up of tiny particles called ________.
All matter is made of molecules (or atoms, but “molecules” is in the word bank).
→ molecules

7. The energy for our water cycle comes from the power of the ________.
The sun drives the whole water cycle with its heat.
→ sun

8. Water droplets that stick to dust form ________.
In the sky, water vapor condenses on dust particles to make clouds.
→ clouds

9. Precipitation means things that ________.
Precipitation falls from the sky — so it means things that fall.
→ fall

10. ________ forms when water droplets freeze on the way down to earth.
If rain freezes while falling, it becomes snow (or sometimes sleet/hail, but “snow” is in the word bank and fits best here).
→ snow

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Now for #11: What can you do to keep water cleaner?

We’re given 5 prompts. Let’s fill them logically:

1. Don’t dump things down storm drains. → Already filled.

2. Don’t ________ water.
Don’t waste water — conserve it. “Waste” is in the word bank.
→ waste

3. Ride your ________.
Riding a bike instead of driving helps reduce pollution that can get into water.
→ bike

4. Conserve ________.
Conserve water — again, “water” isn’t in the word bank? Wait — look at the word bank:
Word Bank: moving, beach, liquid, waste, sun, clouds, molecules, precipitation, electricity, bike, evaporation, condensation, fall, snow

“Electricity” is there — conserving electricity indirectly helps water (power plants use lots of water). But more directly, maybe they mean “conserve water” — but “water” isn’t in the bank. Hmm.

Wait — perhaps #4 is “Conserve electricity”? Because generating electricity often uses water (cooling power plants), so saving electricity saves water too. And “electricity” is in the word bank.

But let’s check context: The list is about keeping water cleaner. So:

- Don’t dump trash → prevents pollution
- Don’t waste water → less runoff, less strain on systems
- Ride your bike → less car pollution → less oil/chemicals washing into water
- Conserve ??? → if not water, then maybe electricity? Or perhaps “beach”? No.

Actually, looking again — maybe #4 is “Conserve water” — but since “water” isn’t in the word bank, perhaps it’s implied? But instructions say to use the word bank.

Wait — re-read the word bank:
It includes: waste, bike, electricity, beach, etc.

Perhaps #4 is “Conserve electricity” — because reducing electricity use reduces pollution from power plants, which protects water quality.

And #5: Clean a ________.
Clean a beach! Beaches are part of the water environment. Litter on beaches washes into oceans.
→ beach

So:

2. Don’t waste water. → “waste” is in bank → ✔
3. Ride your bike. → “bike” is in bank → ✔
4. Conserve electricity. → “electricity” is in bank → makes sense environmentally → ✔
5. Clean a beach. → “beach” is in bank → ✔

Perfect.

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Final Answers:

1. liquid
2. moving
3. evaporation
4. condensation
5. precipitation
6. molecules
7. sun
8. clouds
9. fall
10. snow

11.
2. waste
3. bike
4. electricity
5. beach

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Final Answer:
1. liquid
2. moving
3. evaporation
4. condensation
5. precipitation
6. molecules
7. sun
8. clouds
9. fall
10. snow
11.2. waste
11.3. bike
11.4. electricity
11.5. beach