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. Scientists test this hypothesis to see if they can reject it in favor of an alternative hypothesis. 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 things using numbers, such as height, weight, temperature, or time. This type of research 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
strongly supported by repeated testing and observation. For example, the
Theory of Evolution is backed by extensive scientific evidence.
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5. How can a hypothesis be tested?
✔ Answer: Experiment
Explanation:
A
hypothesis is tested through an
experiment. In an experiment, scientists design a procedure to collect data and determine whether the hypothesis is supported or refuted. Experiments involve controlling variables, making observations, and analyzing results.
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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 terms are foundational in the
scientific method, helping students understand how scientific knowledge is built through observation, testing, and analysis.
Parent Tip: Review the logic above to help your child master the concept of scientific method for kids worksheet.
