Scientific Investigation and Data Interpretation

A student wants to test how the amount of sunlight affects plant growth.

Which factor should be kept constant during the experiment?

Type of soil

Which statement best describes a scientific theory?

An explanation supported by repeated observations and experiments

Which tool would be most appropriate to measure wind speed?

Anemometer

In an experiment, the variable that is intentionally changed is the:

Independent Variable

Which graph is best for showing changes in temperature over time?

Line graph B

Between which two days did the temperature decreases the most?

Day 4 to Day 5

What type of graph would best display this data?

Line graph A

Why is it important to repeat an experiment multiple times?

To reduce experimental error

A control group is used in an experiment to:

Provide a comparison for results

Which statement describes a valid conclusion?

It is supported by collected data

Which unit is used to measure mass in the metric system?

Gram

Which action would most improve the accuracy of data collected?

Using the same equipment each time

Which statement best describes precision?

How consistent repeated measurements are