Grade 7 Vocabulary Worksheet 3: Choose the correct word to complete each sentence.
Grade 7 Vocabulary worksheet with fill-in-the-blank sentences using words like "hastility," "hazardous," "smog," "emissions," "adhere," "particles," "acrid," "murky," "contamination," "acidic," "pollutants," "vulnerable," "collating," "mobilise," "tailpipe," and "fuels."
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Show Answer Key & Explanations
Step-by-step solution for: Grade 7: Vocabulary Worksheets Week 1 - Lets Share Knowledge
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Show Answer Key & Explanations
Step-by-step solution for: Grade 7: Vocabulary Worksheets Week 1 - Lets Share Knowledge
Let's solve each sentence from the Grade 7 Vocabulary Worksheet by choosing the best word from the given options. We'll go step-by-step and explain why each choice is correct.
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- Options: hostility, hazardous, smog
- Best choice: hostility
- Explanation: "Hostility" means unfriendliness or aggression, which fits the context of a crowd behaving aggressively at a protest. "Hazardous" means dangerous, and "smog" is a type of pollution — neither makes sense in this context.
✔ Answer: hostility
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- Options: emissions, adhere, particles
- Best choice: particles
- Explanation: "Particles" are tiny bits of matter that can enter the body (e.g., through breathing). "Emissions" are releases of substances, but not necessarily what gets *into* the body. "Adhere" is a verb (to stick), so it doesn't fit grammatically here.
✔ Answer: particles
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- Options: adhere, pollutants, acidic
- Best choice: pollutants
- Explanation: "Pollutants" are harmful substances that can enter food, water, or air. "Adhere" is a verb and doesn't work as a subject. "Acidic" is an adjective and would need a noun to modify.
✔ Answer: pollutants
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- Options: murky, acrid, vulnerable
- Best choice: murky
- Explanation: "Murky" means cloudy or dirty — it describes the appearance of water. "Acrid" refers to a sharp, unpleasant smell (not visual). "Vulnerable" means susceptible to harm — not descriptive of water’s appearance.
✔ Answer: murky
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- Options: emissions, contamination, acrid
- Best choice: contamination
- Explanation: "Contamination" means polluting something, which matches "runoff causing pollution." "Emissions" are releases, not the result of pollution. "Acrid" is an adjective and doesn't fit the sentence structure.
✔ Answer: contamination
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- Options: emissions, acrid, particles
- Best choice: emissions
- Explanation: "Emissions" refers to the release of gases or pollutants from a power plant — this is a common phrase ("power plant emissions"). "Particles" could also make sense, but "emissions" is more general and accurate here. "Acrid" is an adjective and doesn’t work as a subject.
✔ Answer: emissions
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- First blank: Options: hostility, vulnerable, collating
- Best choice: vulnerable
- Explanation: "Vulnerable" means exposed to danger — it fits with being in a weak position. "Hostility" is a noun, doesn't fit grammatically. "Collating" is a verb form and doesn't make sense here.
- Second blank: Options: mobilize, collating, hazardous
- Best choice: mobilize
- Explanation: "Mobilize" means to organize and use resources effectively — this contrasts with being vulnerable. "Collating" is a present participle, doesn't fit. "Hazardous" is an adjective.
✔ Answers: vulnerable, mobilize
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- Options: particles, collating, tailpipe
- Best choice: tailpipe
- Explanation: A "tailpipe" is a part of a car that can fall off. "Particles" are too small to "fall off" a car. "Collating" is a verb and doesn't fit.
✔ Answer: tailpipe
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- Options: acrid, murky, fuels
- Best choice: acrid
- Explanation: "Acrid" means sharp, bitter, or unpleasant — it describes a scent perfectly. "Murky" describes appearance, not smell. "Fuels" is a noun and wouldn't describe a scent.
✔ Answer: acrid
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1. hostility
2. particles
3. pollutants
4. murky
5. contamination
6. emissions
7. vulnerable, mobilize
8. tailpipe
9. acrid
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Let me know if you'd like this worksheet formatted as a printable answer key!
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1) The crowd showed much more ________ (hostility, hazardous, smog) than was necessary at the protest.
- Options: hostility, hazardous, smog
- Best choice: hostility
- Explanation: "Hostility" means unfriendliness or aggression, which fits the context of a crowd behaving aggressively at a protest. "Hazardous" means dangerous, and "smog" is a type of pollution — neither makes sense in this context.
✔ Answer: hostility
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2) The tiniest ________ (emissions, adhere, particles) can be taken into our bodies without us even realizing it.
- Options: emissions, adhere, particles
- Best choice: particles
- Explanation: "Particles" are tiny bits of matter that can enter the body (e.g., through breathing). "Emissions" are releases of substances, but not necessarily what gets *into* the body. "Adhere" is a verb (to stick), so it doesn't fit grammatically here.
✔ Answer: particles
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3) ________ (adhere, pollutants, acidic) can come from many sources and enter our food, water, or air.
- Options: adhere, pollutants, acidic
- Best choice: pollutants
- Explanation: "Pollutants" are harmful substances that can enter food, water, or air. "Adhere" is a verb and doesn't work as a subject. "Acidic" is an adjective and would need a noun to modify.
✔ Answer: pollutants
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4) The ________ (murky, acrid, vulnerable) water looked unsafe for consumption.
- Options: murky, acrid, vulnerable
- Best choice: murky
- Explanation: "Murky" means cloudy or dirty — it describes the appearance of water. "Acrid" refers to a sharp, unpleasant smell (not visual). "Vulnerable" means susceptible to harm — not descriptive of water’s appearance.
✔ Answer: murky
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5) Runoff from the factory caused ________ (emissions, contamination, acrid) of the water.
- Options: emissions, contamination, acrid
- Best choice: contamination
- Explanation: "Contamination" means polluting something, which matches "runoff causing pollution." "Emissions" are releases, not the result of pollution. "Acrid" is an adjective and doesn't fit the sentence structure.
✔ Answer: contamination
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6) ________ (emissions, acrid, particles) from the power plant were problematic.
- Options: emissions, acrid, particles
- Best choice: emissions
- Explanation: "Emissions" refers to the release of gases or pollutants from a power plant — this is a common phrase ("power plant emissions"). "Particles" could also make sense, but "emissions" is more general and accurate here. "Acrid" is an adjective and doesn’t work as a subject.
✔ Answer: emissions
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7) The group was ________ (hostility, vulnerable, collating), but able to ________ (mobilize, collating, hazardous) their resources.
- First blank: Options: hostility, vulnerable, collating
- Best choice: vulnerable
- Explanation: "Vulnerable" means exposed to danger — it fits with being in a weak position. "Hostility" is a noun, doesn't fit grammatically. "Collating" is a verb form and doesn't make sense here.
- Second blank: Options: mobilize, collating, hazardous
- Best choice: mobilize
- Explanation: "Mobilize" means to organize and use resources effectively — this contrasts with being vulnerable. "Collating" is a present participle, doesn't fit. "Hazardous" is an adjective.
✔ Answers: vulnerable, mobilize
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8) The ________ (particles, collating, tailpipe) fell off the car.
- Options: particles, collating, tailpipe
- Best choice: tailpipe
- Explanation: A "tailpipe" is a part of a car that can fall off. "Particles" are too small to "fall off" a car. "Collating" is a verb and doesn't fit.
✔ Answer: tailpipe
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9) The ________ (acrid, murky, fuels) scent wafted through the air.
- Options: acrid, murky, fuels
- Best choice: acrid
- Explanation: "Acrid" means sharp, bitter, or unpleasant — it describes a scent perfectly. "Murky" describes appearance, not smell. "Fuels" is a noun and wouldn't describe a scent.
✔ Answer: acrid
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✔ Final Answers:
1. hostility
2. particles
3. pollutants
4. murky
5. contamination
6. emissions
7. vulnerable, mobilize
8. tailpipe
9. acrid
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Let me know if you'd like this worksheet formatted as a printable answer key!
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