Science Standards

For her science fair project, Marcy is investigating how levels of carbon dioxide affect plant growth. Which of the following is most important for Marcy to do?

• She needs to make sure her results match her predictions.

• She needs to make sure that her results contain both words and numbers.

• She needs to make sure that the explanation of her results is based on evidence.

• She needs to make sure her results get published so that everyone can read them.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Which of the following must be true for scientific results to be valid?

• The results should be drawn in a graph.

• The results should be based on evidence.

• The results should support the ideas of other scientists.

• The results should match the predictions of the scientist.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

NGSS.MS-PS1-2

Kyle completes his science project for his 5th grade teacher by carrying out a scientific investigation. Which statement about Kyle’s investigation is true?

• Kyle’s investigation must include observation and evidence.

• Kyle must have an investigation with steps that follow a set pattern.

• Kyle’s project is valid only if the teacher personally likes the results.

• Kyle must include all of the steps of the scientific method for his results to be valid.

When conducting an investigation, a scientist’s main goal should be which of the following?

• The scientist should include his opinions in the results.

• The scientist should aim to become famous for his work.

• The scientist should follow a very specific scientific method.

• The scientist should aim to answer questions about the natural world.

Tags

NGSS.HS-PS1-3

Which of the following questions could be answered by a scientific investigation?

• What color is the best to paint with?

• What animal makes a good pet?

• What is the best flavor of soft drink?

• What causes some metals to rust?

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

George’s science teacher has a mixture of table salt and iron filings. Which of the following would be the best way to separate the salt and the iron filings?

• Use a magnet to pull the iron filings from the salt.

• Add food coloring to the mixture to make the salt change color.

• Pour them into a beaker of water and see if the iron filings float.

• Heat up the mixture to see if the salt or the iron filings will burn away.

Carrie has a container that contains thousands of mixed glass beads and iron beads of different shapes and sizes. Which of the following is the best way to separate them?

• The glass beads will float, so she could add water to the container and the glass will float to the top.

• The iron beads are magnetic, so she could separate the glass from the iron with a strong magnet.

• The iron beads might be heavier, so she could shake the container until the iron beads settle to the bottom.

• The iron beads are smaller, so she could pour the beads through a strainer and the glass beads will separate.

Tags

NGSS.MS-PS2-5

Imagine you have a bucket of saltwater. Which of the following would be the best way to remove the water so that you’re left with only salt?

• Stir the saltwater for a long time. The salt will form a crystal.

• Leave the saltwater to sit for a long time. The salt will settle to the bottom.

• Boil the saltwater. The water will evaporate and only the salt will remain.

• Freeze the saltwater. The water will sink to the bottom and the salt will rise to the top.

Tags

NGSS.MS-PS3-4

Abdul uses sugar cubes to sweeten his tea. He wonders whether stirring his tea will make the sugar cube dissolve faster or slower. If Abdul stirs his tea, what effect does it have on the rate at which the sugar cube dissolves?

• The rate that the sugar cube will dissolves will speed up.

• The rate that the sugar cube dissolves will slow down.

• The rate that the sugar cube dissolves will remain the same.

• The rate that the sugar cube dissolves will slow down and then stop.

Tags

NGSS.MS-PS3-5

Which of the following will not dissolve in boiling water?

• baking soda

• sand

• sugar

• table salt