Science Concepts Flashcards

Front

What is a controlled experiment?

Back

An experiment where only one variable is changed and the results are measured objectively.

Front

Define Control variable

Back

A variable that stays the same throughout the experiment.

Front

Define Dependent variable

Back

The outcome that is observed or measured in the experiment.

Front

Define Independent variable

Back

The variable that is changed or manipulated by the scientist.

Front

Why are repeated trials important?

Back

They increase the validity of experimental results.

Front

What is pseudoscience?

Back

Claims that appear scientific but lack evidence and don’t follow the scientific method.

Front

What does the Law of Conservation of Mass state?

Back

Matter cannot be created or destroyed in a chemical reaction.

Front

How can mass be converted into energy?

Back

In nuclear reactions, such as fission or fusion.

Front

What was the Thomson model of the atom?

Back

The “Plum Pudding” model; electrons in a positively charged soup.

Front

What experiment led to the Rutherford model?

Back

The gold foil experiment, which showed atoms have a small, dense nucleus.