Test Review

Front

What is an independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is deforestation?

Back

Deforestation is the removal of large numbers of trees from an area, often to make space for development.

Front

How does deforestation impact the carbon cycle?

Back

Deforestation decreases the amount of carbon dioxide removed from the atmosphere, contributing to climate change.

Front

Through which medium does sound travel fastest?

Back

Sound travels fastest through solids.

Front

What is an astronomical unit (AU)?

Back

An astronomical unit (AU) is a standard unit of measurement used to describe distances in space, equal to the average distance from the Earth to the Sun.

Front

Why are astronomical units used instead of kilometers or miles for measuring distances in space?

Back

One AU represents a large distance, making it easier to compare vast distances between space objects.

Front

What is a control variable in an experiment?

Back

A control variable is a factor that is kept constant to ensure that the results of the experiment are valid.

Front

Why is it important to include a control variable in an experiment?

Back

Including a control variable allows the experimenter to know which factor affected the results.

Front

What is the dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by the independent variable.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.