Scientific Method Quick 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

Which one is a good hypothesis?

• If we drink more water, we'll be able to run faster.

• We will drink more water, then we'll run faster.

• If we drink more water, then we can run faster.

Tags

NGSS.MS-LS1-5

Select the correct independent and dependent parts of the graph .

(choose 2 answers)

• The independent variable is distance

• The independent variable is time

• The dependent variable is distance

• The dependent variable is time

Select the correct independent and dependent parts of the graph .

(choose 2 answers)

• The dependent variable is total cost

• The dependent variable is weight

• The independent variable is total cost

• The independent variable is the weight of the package

Tags

NGSS.MS-PS3-1

Scientists use ___________ to understand how systems work.

• models
• figures
• process
• energy

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-3

NGSS.MS-PS1-1

All of the statements below are correct except one. Mark the one that is incorrect.

• Models must be exactly like what is being modeled.
• Models communicate information.
• Models can be constructed and improved if needed if new evidence arises

• Models can be drawings with labels.

Tags

NGSS.MS-ETS1-4

Which of the following best describes a theory?

• cannot be changed

• an idea

• usually written as a formula

• explains why something is observed

Tags

NGSS.MS-LS4-2

Two students are debating whether playing video games increases a person's reaction time. To test this they decide to perform an experiment. One student spends an hour playing an intense video game while the other student watches. Afterward, they test their reaction times by seeing how quickly they can catch a ruler as it falls between their fingers. Based on the data they collected, what conclusion can be drawn about reaction times?

• playing video games doesn't affect reaction time/there is no difference

• playing video games decreases reaction times
• more trials should be conducted to be able to draw an accurate conclusion

Tags

NGSS.MS-PS2-2

A student wants to test the effects of type of exercise on heart rate.  What is the dependent variable?

• heart rate
• type of exercise
• amount of exercise
• time of day exercise occurs

The dependent variable in this experiment is - 

• Number of Bacteria
• Time of Incubation
• Culture Number
• Type of Bacteria