Science Week 6 Lesson 1 worksheet - Free Printable

Task: Solve the worksheet on evaporation by filling in the blanks and answering the short answer questions.

#### Word Bank:
- Liquid
- Evaporation
- Heat
- Faster
- Disappear
- Gas
- Warmer

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Fill in the Blanks:

1. The process of a _______ changing into a gas is called _______.
- The process of a liquid changing into a gas is called evaporation.
- Answer: Liquid, Evaporation

2. A liquid will turn into a gas as a result of _______ being applied to the liquid.
- A liquid will turn into a gas as a result of heat being applied to the liquid.
- Answer: Heat

3. A spill will _______ as a result of being evaporated.
- A spill will disappear as a result of being evaporated.
- Answer: Disappear

4. The steam you see flowing out of a kettle is a _______.
- The steam you see flowing out of a kettle is a gas.
- Answer: Gas

5. The _______ the temperature, the _______ the liquid will evaporate.
- The warmer the temperature, the faster the liquid will evaporate.
- Answer: Warmer, Faster

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Short Answer Questions:

1. Why do hand dryers use hot air instead of just air?
- Hand dryers use hot air because heat speeds up the process of evaporation. When warm air is blown over wet hands, it increases the temperature of the water on the skin, causing the water molecules to move faster and evaporate more quickly. This makes the drying process faster and more efficient compared to using just cool air.
- Answer: Hot air speeds up the evaporation process by increasing the temperature of the water, making it evaporate faster.

2. Where does the water go when it evaporates from a liquid?
- When water evaporates from a liquid, it changes from a liquid state to a gaseous state (water vapor). The water molecules rise into the air and become part of the atmosphere. Essentially, the water goes into the air as water vapor.
- Answer: The water goes into the air as water vapor.

3. Name some examples of when you have seen evaporation.
- Examples of evaporation include:
1. Water drying off your skin after a shower or swimming.
2. A puddle of water disappearing on a sunny day.
3. Clothes drying in the sun.
4. Steam rising from a boiling pot of water.
5. Sweat evaporating from your skin to cool you down.
- Answer: Water drying off skin after a shower, a puddle disappearing on a sunny day, clothes drying in the sun, steam rising from boiling water, sweat evaporating from skin.

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Final Answer:

- Fill in the Blanks:
1. Liquid, Evaporation
2. Heat
3. Disappear
4. Gas
5. Warmer, Faster

- Short Answer Questions:
1. Hot air speeds up the evaporation process by increasing the temperature of the water, making it evaporate faster.
2. The water goes into the air as water vapor.
3. Examples: Water drying off skin after a shower, a puddle disappearing on a sunny day, clothes drying in the sun, steam rising from boiling water, sweat evaporating from skin.

Boxed Final Answer:
\[
\boxed{
\text{Liquid, Evaporation, Heat, Disappear, Gas, Warmer, Faster}
}
\]