Question 1

What is the purpose of a control group in an experiment?

Accepted Answer

To serve as a baseline for comparison.

Answer

To analyze the results.

Answer

To ensure random assignment of participants.

Answer

To manipulate the independent variable.

Question 2

What is the purpose of a hypothesis in the scientific method?

Accepted Answer

To propose a testable explanation for an observation or phenomenon.

Answer

To reject alternative explanations.

Answer

To prove a theory beyond doubt.

Answer

To collect data and analyze results.

Question 3

Why is it important for scientists to communicate their findings?

Accepted Answer

To share knowledge and promote collaboration.

Answer

To increase competition among scientists.

Answer

To keep their research exclusive.

Answer

To prevent others from replicating their experiments.

Question 4

Which of the following is NOT a characteristic of a scientific theory?

Accepted Answer

Being a guess or speculation.

Answer

Being subject to revision or refinement.

Answer

Having explanatory power.

Answer

Being supported by a large body of evidence.

Question 5

Which of the following is an example of a scientific hypothesis?

Accepted Answer

If you increase the temperature of water then it will cause it to evaporate faster.

Answer

The Earth is flat.

Answer

Chocolate ice cream is the best flavor.

Answer

Plants need sunlight to grow.

Answer

Increasing the temperature of water will cause it to evaporate faster.

Question 6

What is a scientific law?

Accepted Answer

A description of an observed phenomenon that holds true under specific conditions

Answer

A guess or speculation about the natural world

Answer

An unproven idea or hypothesis

Answer

A proven and absolute truth about the natural world

Question 7

What is a dependent variable?

Accepted Answer

A variable that is being measured or observed in an experiment.

Answer

A variable that remains constant throughout the experiment.

Answer

A variable that is independent of any other factors.

Answer

A variable that is manipulated by the researcher.

Question 8

In a biology experiment examining the effect of fertilizer on plant growth, what would be the dependent variable?

Accepted Answer

Plant growth

Answer

Fertilizer

Answer

Soil pH

Answer

Temperature

Question 9

What is an independent variable?

Accepted Answer

The variable that is manipulated or changed by the researcher.

Answer

The variable that is measured or observed in the experiment.

Answer

The variable that is used to compare the experimental and control groups.

Answer

The variable that remains constant throughout the experiment.

Question 10

In a study investigating the effects of temperature on plant growth, what would be the independent variable?

Accepted Answer

The temperature in the environment.

Answer

The height of the plants.

Answer

The amount of water given to the plants.

Answer

The type of plant used.

Question 11

What does precision refer to in science?

Accepted Answer

The closeness of the measured values to each other.

Answer

The accuracy of the measurement.

Answer

The range of values obtained.

Answer

The number of significant figures in the measurement.

Question 12

What is accuracy in science?

Accepted Answer

The closeness of a measured value to a standard or known value.

Answer

The range of values within which a measurement is likely to fall.

Answer

The ability to repeat an experiment multiple times.

Answer

The process of collecting data in an experiment.

Question 13

Which of the following is an example of a quantitative observation in science?

Accepted Answer

The weight of an object

Answer

The taste of a fruit

Answer

The color of a flower

Answer

The smell of a perfume

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