Nature of Science Review

A scientific test done under controlled conditions, meaning just one factor is changed at a time, while all others are kept constant is a _____________.

• control group

• experimental group

• controlled experiment

• hypothesis

Which step of scientific inquiry would most likely occur first during an investigation?

• Test a Hypothesis

• Ask a Question

• Analyze Results

• Draw Conclusions

Jennifer wanted to study the effect of sunlight on plant growth. She exposed 10 identical plants to various amounts of sunlight each day (2 hours, 3 hours, 4 hours, 5 hours, and 6 hours). After one month, she measured the mass of the plants. What was the independent variable?

• Hours of Sunlight

• Mass of Plant

• Type of Plant

• Amount of Water

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which of the following words is used to describe a set of measurements that are closely grouped together, but not necessarily close to the actual true value.

• Precise

• Accurate

I am conducting an experiment to determine if the amount of fertilizer used on a field affects the number of earthworms found there. Which would be the dependent variable for this experiment?

• Amount of fertilizer

• Number of earthworms

• Type of fertilizer

• Amount of time

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of these contain the steps of the Scientific Process in their most common order?

• Ask a question, state your hypothesis, research, experiment, analyze, make a conclusion

• State your hypothesis, ask a question, research, experiment, analyze, make a conclusion

• Ask a question, research, state your hypothesis, experiment, analyze, make a conclusion

• State your hypothesis, ask a question, research, make a conclusion, experiment, analyze

What part of the scientific process does this represent?

"If plants are exposed to more sunlight, then they will grow taller because light energy is used during photosynthesis to make sugar that is used for growth."

• Procedure

• Hypothesis

• Question

• Results

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

This is done to increase accuracy and check and compare results with other scientists by re-doing or copying their entire experiment.

• Repetition

• Replication

A student conducts an experiment in which she drops objects, each with a different mass, all from the same height. She uses a stopwatch and records the time it takes for each object to hit the ground. Which of the following is the independent variable in her experiment?

• Time the object travels

• Height at which the object is dropped

• Mass of the object

• Stopwatch used

What is the volume of the rock shown in the picture?

• 20 mL

• 40 mL

• 10 mL

• 60 mL