Observations, CER, & Lab safety

Observations like the color or texture of an object are ________________ observations.

• quantitative
• qualitative
• operational
• scientific

Observations like measurements are ____________ observations

• quantitiative
• qualitative
• operational
• scientific

Which of the following is an observation about the man in this picture:

• The man hates his purple shirt.
• The man has a purple shirt.
• The man is having a bad day.
• This man is upset because he's hungry

After completing an experiment, all chemical and biological waste should be

• left at your lab station for the next class.

• taken home.

• dumped in the sink.

• disposed of according to your teacher’s directions.

You have been injured in the laboratory (cut, burned, etc.). First you should

• visit the school nurse after class.

• see a doctor after school.

• tell the teacher at once.

• apply first aid yourself.

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

• loose clothing

• dangling jewelry

• sandals

• all of the above

Horseplay, practical jokes, or pranks in the classroom/ lab are

• always against the rules.

• okay.

• not dangerous

• okay if you are working alone.

What is the definition for a claim?

• A statement you believe to be false.

• A statement that you believe to be true.

• Evidence that proves something is right.

• An opinion

What does evidence mean?

• a statement that you believe to be true

• an opinion

• all scientific data that supports your claim

• an argument

What does reasoning mean?

• a good argument

• an explanation that connects your evidence to your claim

• a written response to a claim

• an opinion you believe in