SC.8.N.1.5

The diagram shows two gases P and Q in a gas cycle. Which of the following are gases P and Q?

• P: Oxygen ; Q: Carbon dioxide

• P: Carbon dioxide; Q: Oxygen

• P: Nitrogen; Q: Carbon dioxide

• P: Nitrogen; Q: Oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What happens to the amount of gases P and Q if all green plants are destroyed?

• P: Increases; Q: Decreases

• P: Increases; Q: Increases

• P: Decreases; Q: Increases

• P: Decreases; Q: Decreases

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The diagram shows human activity that can disturb natural balance. What should be done to reduce the adverse effects of the activity?

• Replanting trees

• Using organic fertilisers

• Using biological control method

• Obliging the use of effluent filters on the smoke funnel

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-5

Which of the following contribute to the increase in the content of water vapour in the air? (Choose more than one answer)

• Rain

• Defecation

• Transpiration

• Photosynthesis

Tags

NGSS.MS-ESS2-4

What is the process where plant absorbs oxygen and release carbon dioxide?

• respiration

• transpiration

• combustion

• photosynthesis

What is a factor, usually being measured or observed, that responds to, or depends on, another factor.

• Independent Variable

• Dependent Variable

• Controlled Variable

• Hypothesis

Tags

NGSS.MS-LS2-1

NGSS.MS-PS2-2

We tested the effect of water temperature on how fast a sugar cube dissolves. What was the independent variable?

• Time to Dissolve

• Amount of Water

• Water Temperature

• Beaker Size

Tags

NGSS.MS-PS1-4

We tested the effect of water temperature on how fast a sugar cube dissolves. What was NOT a controlled variable?

• Size of Sugar Cube

• Temperature of Water

• Size of Beaker

• Amount of Water

Tags

NGSS.MS-PS1-2

What are making multiple sets (trials) of measurements or observations in a scientific investigation.

• Repetition

• Replication

What is the variable manipulated by the experimenter in order to study changes in the outcome variable?

• Independent Variable

• Dependent Variable

• Controlled Variable

• Hypothesis