Science basics

What is the part of an experiment that serves as a standard for comparison?

• Control Group

• Constant

• Hypothesis

• Variable

A testable prediction that predicts a cause and effect relationship between variables is a(n) ____.

• analysis

• hypothesis

• observation

• inference

Why is it advisable to use tongs when taking a beaker off a laboratory burner?

• It prevents spilling.

• It prevents the beaker from breaking.

• It looks cool.

• It allows you to move it if it is too hot.

A factor in an experiment that changes in response to the independent variable is the ____.

• hypothesis

• constant

• independent variable

• control group

• dependent variable

Using the graduated cylinder to the right, pick the accurate AND precise measurement below.

• 22.0 mL

• 20.0 mL

• 22 mL

• 20 mL

All of the following are steps in the scientific method EXCEPT

• observing and recording data.

• forming a hypothesis.

• developing a model.

• discarding data that doesn’t match the hypothesis.

A factor that does NOT change in an experiment is the ______

• independent variable

• dependent variable

• control group

• hypothesis

• constant

The “cause” of the experiment, what we are purposefully manipulating or changing is the ____

• constant

• control group

• dependent variable

• independent variable

Using the graph to the right, how many adults do NOT carpool to work?

• 15

• 50

• 130

• 160

The speed of light is approximately 3.0 x 10^8 m/s. How would this be written in standard notation?

• 300,000 m/s

• 30,000,000 m/s

• 3,000,000 m/s

• 300,000,000 m/s