What is the main focus of Life Science?

• Study of outer space

• Study of matter and energy

• Study of organisms

• Study of Earth's structure

Which atomic model proposed that electrons orbit the nucleus in fixed energy levels?

• Bohr’s Atomic Model

• Rutherford’s Atomic Model

• Modern Atomic Model

• Thomson’s Atomic Model

What is a scientific law?

• An explanation of why an event happens

• A theory that has been proven

• A hypothesis that has been tested

• A statement based on collected data

Which of the following is NOT a branch of science?

• Social Science

• Earth Science

• Physical Science

• Life Science

What is the purpose of using models in science?

• To simplify complex ideas

• To make predictions about the future

• To replace experiments

• To prove theories

What is the independent variable in an experiment?

• The variable that is observed

• The variable that is measured

• The variable that remains constant

• The variable that is changed

What does density measure?

• Mass per unit area

• Weight per unit area

• Volume per unit mass

• Mass per unit volume

Which of the following is a derived unit?

• Newton

• Liter

• Kilogram

• Meter

What is the first step in the scientific method?

• Test a hypothesis

• Analyze the data

• State the problem

• Form a hypothesis

What is the purpose of peer review in science?

• To publish findings

• To validate results

• To gather data

• To minimize bias