Scientific Method and Lab Safety

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

•  to avoid eye strain
• to improve your vision
• only if you don’t have corrective glasses
•  any time chemicals, heat or glassware are used

Dependent variable means

• the scientist controls what to test
• educated guess
• ask a question
• what is being measured

Tags

NGSS.MS-PS2-2

This variable in an experiment is the one being changed by the scientist. 

• dependent variable
• independent variable
• data
• control group

Tags

NGSS.MS-PS2-2

If you break glassware in the lab, you should...

• Tell the teacher
• Clean it up quickly before the teacher notices
• Scream at the top of your lungs

You are heating a substance in a test tube. Always point the open end of the tube 

• away from all people
• toward another classmate
• toward your lab partner
• toward yourself

Select ALL the observations of this picture.

• The donkey is heavy

• His shirt is red

• He is stealing the donkey

• There is a rope

The variable(s) you keep the same in a science experiment

• Independent variable

• Dependent variable

• Control variable

Tags

NGSS.MS-PS2-2

Select all the things required in a bar graph.

• Label horizontal axis

• Label the vertical axis

• Number the intervals (equal)

• Title

Tags

NGSS.MS-PS3-1

Identify the Independent variable from this question......

What brand of bleach whitens spaghetti stains on clothes better?

• Clothes whiteness

• Stains

• Brand of bleach

• None of the above

Tags

NGSS.MS-PS1-2

Identify the dependent variable from this question......

Which makes water freeze faster salt or sugar

• how fast the water freezes

• salt

• sugar

• None of the above