Let's solve each question on the
Science Vocabulary worksheet step by step and explain the answers.
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1. This variable can be controlled and changed.
✔ Answer: Independent Variable
Explanation:
In an experiment, the
independent variable is the one that the scientist deliberately changes or manipulates to observe its effect. It is "independent" because it does not depend on other variables in the experiment.
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2. A hypothesis which states that there is no difference in the variable.
✔ Answer: Null Hypothesis
Explanation:
The
null hypothesis is a statement that there is no effect or no difference between groups or variables. It serves as a default position that researchers try to either reject or fail to reject based on data. For example, "There is no difference in plant growth with and without fertilizer."
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3. Research that uses numerical data.
✔ Answer: Quantitative Research
Explanation:
Quantitative research involves collecting and analyzing numerical data. It focuses on measuring quantities, such as height, weight, temperature, or time, and often uses statistics to interpret results.
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4. This is often likely to be true compared with a hypothesis because it has evidence that serves as proof.
✔ Answer: Theory
Explanation:
A
theory is a well-substantiated explanation of some aspect of the natural world that is supported by a large body of evidence. Unlike a hypothesis (which is a testable prediction), a theory is broader and has been repeatedly tested and confirmed through observation and experimentation.
> Note: The phrasing here is slightly misleading. A
theory is *not* "more likely to be true" than a hypothesis — rather, a theory is a well-supported explanation that has evolved from many tested hypotheses.
But given the context of this vocabulary exercise,
"Theory" is the best match.
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5. How can a hypothesis be tested?
✔ Answer: Experiment
Explanation:
A
hypothesis is tested through an
experiment, where variables are manipulated and observed under controlled conditions. Experiments allow scientists to gather data to support or refute the hypothesis.
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✔ Final Answers:
| Question | Answer |
|--------|--------|
| 1. This variable can be controlled and changed. |
Independent Variable |
| 2. A hypothesis which states that there is no difference in the variable. |
Null Hypothesis |
| 3. Research that uses numerical data. |
Quantitative Research |
| 4. This is often likely to be true compared with a hypothesis because it has evidence that serves as proof. |
Theory |
| 5. How can a hypothesis be tested? |
Experiment |
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These answers align perfectly with the vocabulary terms provided at the top of the worksheet. Each term fits the definition given in the questions.
Parent Tip: Review the logic above to help your child master the concept of scientific process worksheet.
