Exploring Science: Methods and Safety

What is the first step in the scientific method?

• Forming a hypothesis

• Conducting an experiment

• Making an observation

• Analyzing data

Which of the following is a tool used to measure mass?

• Thermometer

• Balance scale

• Graduated cylinder

• Stopwatch

In an experiment, the variable that is changed or controlled by the scientist is called the:

• Dependent variable

• Independent variable

• Controlled variable

• Extraneous variable

Which of the following is a safety rule in a science lab?

• Eating and drinking are allowed

• Always wear safety goggles

• Running is permitted

• Ignore spills

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

• To test the hypothesis

• To serve as a standard for comparison

• To change the outcome of the experiment

• To introduce new variables

Which tool is used to measure the volume of a liquid?

• Ruler

• Balance scale

• Graduated cylinder

• Stopwatch

What is the dependent variable in an experiment?

• The variable that is changed by the scientist

• The variable that is measured or observed

• The variable that remains constant

• The variable that is not used

Which of the following is NOT a step in the scientific method?

• Formulating a hypothesis

• Conducting an experiment

• Making a guess

• Analyzing data

What is the main purpose of using a thermometer in a science experiment?

• To measure mass

• To measure temperature

• To measure volume

• To measure time

Tags

NGSS.MS-PS3-4

In an experiment, what is the term for the factors that are kept the same throughout the experiment?

• Independent variables

• Dependent variables

• Controlled variables

• Extraneous variables