Grade 7: Vocabulary Worksheets Week 1 - Lets Share Knowledge - Free Printable

Problem: Complete the sentences by choosing the most appropriate word from the given options.

#### Worksheet: Grade 7 Vocabulary - Week 1, Worksheet 3

#### Directions:
Choose the word that best completes each sentence and write it on the line.

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Solution:

1. The crowd showed much more ________ (hostility, hazardous, smog) than was necessary at the protest.
- Answer: hostility
- Explanation: "Hostility" refers to a feeling of animosity or ill will, which fits the context of a protest where emotions can run high. "Hazardous" means dangerous, and "smog" is air pollution, neither of which fit the context of describing the crowd's behavior.

2. The tiniest ________ (emissions, adhere, particles) can be taken into our bodies without us even realizing it.
- Answer: particles
- Explanation: "Particles" are tiny bits of matter that can be inhaled or absorbed into the body. "Emissions" refers to the release of something (like gases), and "adhere" means to stick to something, neither of which fit the context.

3. ________ (adhere, pollutants, acrid) can come from many sources and enter our food, water, or air.
- Answer: pollutants
- Explanation: "Pollutants" are substances that contaminate the environment, which can enter food, water, or air. "Adhere" means to stick to something, and "acrid" describes a sharp, unpleasant smell or taste, neither of which fit the context.

4. The ________ (murky, acrid, vulnerable) water looked unsafe for consumption.
- Answer: murky
- Explanation: "Murky" means unclear or opaque, often used to describe water that looks dirty or unsafe. "Acrid" describes a sharp, unpleasant smell or taste, and "vulnerable" means susceptible to harm, neither of which fit the context.

5. Runoff from the factory caused ________ (emissions, contamination, acrid) of the water.
- Answer: contamination
- Explanation: "Contamination" means the presence of harmful substances in the water, which is what runoff from a factory would cause. "Emissions" refers to the release of gases, and "acrid" describes a sharp, unpleasant smell or taste, neither of which fit the context.

6. ________ (emissions, acrid, particles) from the power plant were problematic.
- Answer: emissions
- Explanation: "Emissions" refers to the release of gases or pollutants, which is a common issue with power plants. "Acrid" describes a sharp, unpleasant smell or taste, and "particles" are tiny bits of matter, neither of which fit the context as well as "emissions."

7. The group was ________ (hostility, vulnerable, collating), but able to ________ (mobilise, collating, hazardous) their resources.
- Answer: vulnerable, mobilise
- Explanation: The first blank should be "vulnerable," meaning susceptible to harm or danger. The second blank should be "mobilise," meaning to organize and use resources effectively. "Hostility" refers to animosity, and "collating" means arranging things in order, neither of which fit the context.

8. The ________ (particles, collating, tailpipe) fell off the car.
- Answer: tailpipe
- Explanation: "Tailpipe" is a part of a car that could fall off. "Particles" are tiny bits of matter, and "collating" means arranging things in order, neither of which fit the context.

9. The ________ (acrid, murky, fuels) scent wafted through the air.
- Answer: acrid
- Explanation: "Acrid" describes a sharp, unpleasant smell, which fits the context of a scent wafting through the air. "Murky" means unclear or opaque, and "fuels" refers to substances used for energy, neither of which fit the context.

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Final Answers:

1. hostility
2. particles
3. pollutants
4. murky
5. contamination
6. emissions
7. vulnerable, mobilise
8. tailpipe
9. acrid

Boxed Final Answer:
\boxed{
\begin{array}{l}
1. \text{hostility} \\
2. \text{particles} \\
3. \text{pollutants} \\
4. \text{murky} \\
5. \text{contamination} \\
6. \text{emissions} \\
7. \text{vulnerable, mobilise} \\
8. \text{tailpipe} \\
9. \text{acrid}
\end{array}
}