Science Review

A students was doing an experiment using the scientific method. Every three days the student plans to count the green leaves. Which would be a good hypothesis for this experiment?

• If plants are placed in direct sunlight, then they will grow more green leaves.

• If plants are places in bright light, then they will grow more green leaves than in dim light.

• If plants are place in clay pots, then they will grow more green leaves than plastic pots.

• If plants are in warmer temperatures, then they will grow more green leaves.

Tags

NGSS.MS-LS1-5

In an experiment, the one variable that is changed is called the

• dependent variable

• independent variable

• experimental variable

• controlled variable

In an experiment, the factor that we measure is called the

• independent variable

• dependent variable

• conclusion

• controlled variable

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The independent variable is

• the male alligators

• the gender of the alligator

• the temperature

• the incubator

Tags

NGSS.MS-LS1-5

A scientist hypothesizes the the temperature at which an alligator's egg is incubated will determine whether the alligator will be male or female. The dependent variable is

• the temperature

• the size of the baby alligators

• the incubator

• the gender of the baby alligators

Tags

NGSS.MS-LS1-5

In a controlled experiment, how many independent variables can be worked with at a time? 

• one
• none
• two or more
• how ever many makes sense.

Tags

NGSS.MS-PS2-2

Cindy placed three beehives with the same mass into separate (but identical) glass containers. Hive A was kept at 100˚F, Hive B was kept at 0˚F, and Hive C was kept at room temperature (75˚F ) For the next month, she measured the amount of honey each hive produced. Hive C produced more honey than the other two hives.

What is the test (INDEPENDENT) variable in Cindy's experiment?

• the temperature of each hive

• the number of hives

• the mass of each hive

• the amount of honey produced

What is being kept constant?

• amount of fertilizer

• amount of water

• height

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

What is the outcome (DEPENDENT) variable?

• plant height

• time in days

• sunflower

• daisy

Tags

NGSS.MS-LS1-5

What is the best definition of the term "theory", as it’s used in science?

• What is the best definition of the term "theory", as it’s used in science?

• It is well tested set of ideas that explains events that occur in nature.

• A theory is based on laws that can be proven true.

• It is a hypothesis that has been confirmed