PBS WXam

What is an independent variable in an experiment?

• The variable that is changed or controlled

• The variable that is measured

• The variable that remains constant

• The variable that is used as a comparison

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

Which variable is typically placed on the x-axis in scientific graphs?

• Dependent variable

• Independent variable

• Control variable

• Constant variable

Tags

NGSS.MS-PS3-1

What should be done if animals in a lab setting show signs of illness or disease?

• Ignore the signs

• Document the signs and report to a supervisor

• Continue with the experiment as planned

• Change the animal's diet

What writing utensil should be used on every page of a lab notebook?

• Pencil

• Marker

• Pen

• Crayon

List 4 pieces of information an equipment log contains.

• Date, time, user, and maintenance performed

• User's favorite color, date, time, and equipment type

• Equipment type, user's age, maintenance performed, and location

• User's name, equipment type, favorite food, and date

What two procedures should be followed when maintaining equipment?

• Cleaning and calibration

• Painting and decorating

• Disassembling and discarding

• Ignoring and storing

What needs to be done if a balance doesn’t seem to be working correctly?

• Ignore it and continue using

• Calibrate or repair it

• Paint it a different color

• Use it as a paperweight

What does a biohazard sign indicate?

• Presence of biological hazards

• Area is safe for picnics

• No entry for animals

• High voltage area

Tags

NGSS.HS-LS2-7

What does the radiation hazard sign indicate about potential hazards?

• Presence of radioactive materials

• Safe zone for children

• Area for swimming

• No parking zone

Tags

NGSS.HS-PS1-8

What would be your concern if you saw an acid sign on a door or chemical container?

• Risk of chemical burns

• Area is safe for eating

• No risk at all

• Suitable for swimming

Tags

NGSS.MS-PS1-2