8th Grade FINAL EXAM

What is a hypothesis?

• A. A random guess about something

• B. A scientific question that can be tested

• C. An if/then statement that predicts an outcome

• D. The final result of an experiment

Tags

NGSS.HS-PS1-2

In the experiment "If I water a plant more, then it will grow taller," what is the independent variable?

• The height of the plant

• The amount of water given

• The type of soil used

• The temperature of the room

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

In a scientific experiment, what is a control group?

• A. A group that changes during the experiment

• B. A group that receives no treatment

• C. A group that gets extra attention

• D. A group that fails the experiment

Tags

NGSS.MS-PS1-2

Which of these is written as a proper hypothesis?

• Plants need water to grow

• Do plants need sunlight?

• If a plant gets more sunlight, then it will grow faster

• Growing plants in different soils

Tags

NGSS.MS-LS1-5

What is a dependent variable in an experiment?

• The factor that the scientist changes

• The factor that stays the same

• The factor that is being measured or observed

• The starting point of the experiment

Which statement shows cause and effect?

• I like to study plants

• Plants are green and tall

• If I add fertilizer, then the plant will grow bigger

• How much water do plants need?

Tags

NGSS.MS-LS1-5

What should you do first in a scientific investigation?

• Write a conclusion

• Make observations

• Test your hypothesis

• Create a graph

Which of these is NOT a good hypothesis?

• If I exercise more, then I will get stronger

• Plants are really interesting to study

• If I study longer, then my grades will improve

• If I practice piano more, then I will play better

Tags

NGSS.MS-LS2-4

What are the three main states of matter?

• Solid, water, and gas

• Liquid, gas, and plasma

• Solid, liquid, and gas

• Water, ice, and steam

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What happens to water molecules when water freezes?

• They move faster and spread out

• They stop moving completely

• They move slower and come closer together

• They disappear entirely

Tags

NGSS.MS-PS1-4