2023 2nd semester exam

What is a variable that is changed in an experiment?

• independent variable

• dependent variable

• control variable

• constant variables

Tags

NGSS.MS-PS2-2

What is a variable that is measured during an experiment?

• independent variable

• dependent variable

• control variable

• constant cariable

Tags

NGSS.MS-PS1-2

Why do people that work around x-ray machines have to wear badges?

• They indicate the type of radiation they are exposed to

• The badges absorb the radiation

• The badges indicate the amount of radiation the staff members were exposed to

• exposure to the smallest amount of x-ray radiation is harmful to organisms.

What variable is a "no treatment" variable and used for comparison?

• independent variable

• dependent variable

• control variable

• constant variable

Tags

NGSS.MS-PS2-2

What variable is kept the same in all trials?

• independent variable

• dependent variable

• control variable

• constant variables

What step in the scientific method is used to accept or reject a hypothesis?

• research

• build an experiment

• analyze data

• determine variables

Tags

NGSS.MS-PS1-2

If you are testing insulation in cups and record the temperature of the water in each cup, using scientific thermometers, every 10 minutes until the water reaches room temperature. Which of these conditions must be the same for this experiment to be valid?

• type of insulation

• use the same thermometer

• starting temperature of water

• ending temperature of water

Tags

NGSS.MS-PS3-4

What should you do in an experiment to verify results?

• repetition

• replication

• change all variables

• do research on the internet

Tags

NGSS.MS-ETS1-3

NGSS.MS-ETS1-4

How is pseudoscience different from science?

• Pseudoscientific conclusions are not supported by data gathered using scientific methods

• Pseudoscience does not involve making observations

• Pseudoscience does not examine phenomena in the natural world

• Pseudoscience does not attempt to provide explanations for phenomena

Tags

NGSS.MS-LS1-1

What is science?

• study of only living organisms

• observational study of Earth

• Discussion of feelings and thoughts

• systematic study of natural events and conditions