SC.5.N.1.1

Which of the following is an observation that can be made about this investigation?

• The temperature of the coffee feels like it is 39.2 degrees.

• The room temperature is cold.

• The reading on the thermometer is wrong.

• The temperature of the coffee is 39.2 degrees.

Tags

NGSS.MS-PS3-4

Julio counts the number of flowers that grow in his backyard. Then he compares those numbers to the daily temperature. He makes the table. Based on Julio’s practice of science, which of the following statements supports that this is a science investigation?

• It is an investigation because he is making observations and collecting evidence.

• It is not an investigation because he does not follow the scientific method.

• It is an investigation because he uses a control group in the study.

• It is not an investigation because he does not use variables in his process.

Tags

NGSS.MS-LS2-1

Anna measures how far a toy car rolls across the floor when the floor has different coverings on it. Then, she puts the data into a table. Which is the best prediction for how far the marble will roll on the wood floor for trial 3?

• 6

• 11

• 52

• 20

Tags

NGSS.MS-PS2-2

Mia and Lisa want to perform the same experiment the exact same way. Why should they expect the results from both experiments to be the same?

• Experiments should be able to be reproduced by others.

• Mia made a mistake during the experiment.

• Lisa is stealing the Mia’s experiment.

• Experiments should always have at least 3 trials.

Which of the following should an experimenter do to make sure they conducted a good scientific experiment?

• Make sure no one has already taken similar measurements.

• Make sure other people see them them taking measurements.

• Make sure others can repeat their experiment and results.

• Make sure no one can repeat their experiment and results.

The students are interested in how adding eggshells to the soil affects plant growth. They decide to do an experiment to find out if eggshells can help plants grow taller. The students plants nine plants. They gives three of the plants (Group A) 1 gram of eggshells. They give the other three plants (Group B) 3 grams of eggshells. They give the last 3 plants (Group C) 5 grams of eggshells. Then they measured the growth of the plants. Their data is recorded in the table. The students made the claim that eggshells helped plants grow faster. Which best explains why students’ claim is NOT valid?

• They did not measure the height of the plants enough times.

• They should have used a fourth group that got more than 7 g of eggshells.

• They should have only used one plant per group.

• They did not include control plants without eggshells.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Why is a control group important in an experiment?

• Control groups do not matter.

• Control groups help determine if results are random.

• Control groups show what variables stayed the same.

• Control groups show what variable is changed.

Tags

NGSS.MS-PS2-2

After completing the first trial of an experiment, what should a student do next?

• Repeat the investigation to see if the results stay the same and are valid.

• Delete the data because it doesn't match the student's hypothesis.

• Replace the findings at 5 minutes with the average of 10 readings.

• Use the data and stop the experiment.

Tags

NGSS.MS-ETS1-4

A student wants to know if the number of lady bugs in the garden changes from winter to spring. What is the best way to investigate this?

• Ask other students to count the number of lady bugs they see on different days and compare the data.

• Look for information about lady bugs on the internet about the number of lady bugs observed in other schools.

• Find out which plants in the garden attract the most lady bugs and count the number of lady bugs near those plants every month.

• Observe and record the number of lady bugs in the garden every week from December to May.

Tim wants to build a model of the water cycle as an experimental investigation. Sam says it is not an experimental investigation. Who is correct and why?

• Tim, because other scientists have built this model in the past.

• Sam, because materials are from different stores.

• Tim, because he plans to repeat his investigation multiple times.

• Sam, because variables are not identified or controlled.

Tags

NGSS.MS-ESS2-4