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.

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-PS1-4

NGSS.MS-PS3-4

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.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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-ESS2-1

NGSS.MS-ESS2-4

Lisa wants to see which liquid would make plants grow tallest. She gathers 3 plants, 50 ml of milk, apple juice, and Pepsi. What variable is Lisa testing?

• The amount of sunlight.

• The amount of liquid placed in each plant.

• The types of liquids that will make the plants grow tallest.

• The kind of dirt.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

When repeating an experiment which has been done before, what may cause an error?

• Not following all of the steps in the experiment.

• Repeating the experiment at least 3 times and comparing the data.

• Using the same materials.

• Making observations and collecting data.

Tags

NGSS.MS-PS2-5

You completed an experiment, but your results do not match the rest of the class. Why would your teacher ask you to repeat your investigation?

• to have you change your hypothesis to match your results

• to change your steps to get the same results as the rest of the class

• to see if your original results were caused by an error

• to see if your can get new results to match your hypothesis

A student writes the following list of materials in her lab notebook:

1. Collect materials:
2. 3 rose plants
3. milk
4. Pepsi
5. orange juice
6. 3 measuring cups

What piece of information did the student NOT include in her list of materials to ensure that someone could repeat this experiment?

• the location of the experiment

• the type of measuring cup used in the experiment

• the temperature of the liquids used in the experiment

• the amount of each liquid used in the experiment

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-LS1-5

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-PS3-1