8th Grade Science Semester 1

If a fire erupts, immediately

• throw water on the fire.

• open the windows.

• run for the fire extinguisher.

• notify the teacher.

Approved eye protection devices (such as goggles) are worn in the laboratory

• to avoid eye strain.

• any time chemicals, heat, or glassware are used.

• only if you do not have corrective glasses.

• to improve your vision.

After completing an experiment, all chemical wastes should be

• disposed of according to your teacher’s directions.

• dumped in the sink.

• taken home.

• left at your lab station for the next class.

Which of the following should NOT be worn during a laboratory activity?

• sandals

• dangling jewelry

• loose clothing

• All of the above.

Horseplay, practical jokes, or pranks in the classroom are

• not dangerous.

• okay.

• okay if you are working alone.

• always against the rules.

When you finish working with chemicals, biological specimens, and other lab substances, always

• wipe your hands on a towel.

• wash your hands thoroughly with soap and water.

• treat your hands with skin lotion.

• wipe your hands on your clothes.

When using a razor blade or scalpel, always cut material

• perpendicular.

• away from you.

• toward you.

• in your hand.

It is okay to pick up broken glass with your bare hands as long as the glass is placed in the trash can.

• False

• True

This is an "if...., then....." statement.

• procedures

• testable question

• hypothesis

• conclusion

The factor in an experiment that is changed.

• independent variable

• dependent variable

• observation

• conclusion

Tags

NGSS.MS-PS2-2