Nature of Science (SC.7.N.1.1)

Dana wants to test whether turning a compost pile twice works better than turning it once. How many compost piles does she need?

• 1

• 2

• 3

• as many as possible

Tags

NGSS.MS-ETS1-3

How many variables should be tested at one time?

• 1

• 2

• 3

• as many as you want

Randy places a piece of metal in 3 different acids and water. Why does he need the water?

• to compare the affect of acids to it.

• to see what happens to the metal.

• to see how acid rain affects the metal.

• to compare the affect of the acids on the metal.

Colleen wants to find out if watering plants more often produces more leaves. What is the test variable?

• number of leaves

• number of plants

• amount of plant growth

• amount of water

Tags

NGSS.MS-LS1-5

Colleen wants to find out if watering plants more often produces more leaves. What is the outcome variable?

• the number of leaves

• the number of plants

• the amount of plant growth

• the amount of water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Other than scientific experiments, what other methods do scientists use to investigate problems?

• Models, Observations, & Research

• Models, Observation, & Replication

• Models, Repetition, & Replication

• Models, Repetition, & Variables

Tags

NGSS.MS-PS2-5

Which statement is an example of repetition?

• Pour 50 mL of water down 4 inclined surfaces.

• Roll a marble down a ramp from a height of 10 cm, 20 cm, and 30 cm.

• Take the mass of 5 rocks and then determine the average mass of the rocks.

• Conduct 4 trials of counting the bubbles produced a water plant for 1 minute each.

Science determines results based on _____________________.

• Rumor

• Hypothesis

• Evidence

• Popular opinion

Tags

NGSS.MS-LS1-5

NGSS.MS-PS1-2

Scientists sometimes change their views. For example, people once believed that Pluto was a planet. What causes these changes in thinking?

• new experiments

• new evidence or interpretations

• new scientific beliefs

• new theories develop

Which one is a limitation of a drawing but not a model of the cell?

• it does represent the main parts of a cell

• it does not contain the correct number of nuclei

• it cannot represent a true cell which is 3 dimensional

• it cannot represent a true cell since the cytoplasm should be in constant motion

Tags

NGSS.MS-LS1-2