Which variable is being tested in the experiment?

• size of measuring cup

• amount of baking soda

• amount of liquid

• type of liquid

Tags

NGSS.MS-PS1-2

Adrianna is investigating how surface area affects the evaporation of water. She pours the same amount of water into both a shallow dish and a tall, narrow jar.
For this experiment, Adrianna recorded the notes shown below.

Which is a recorded observation that Adrianna can test?

• Measuring the surface areas would be too difficult.

• The water in the shallow dish evaporates more quickly.

• I did not use thermometers to measure the temperature.

• I should use hot water instead of water at room temperature.

Christy’s mother observed that there are more flies this summer than there usually

are. Which sequence of steps can Christy use to investigate whether this is true?

• make a plan, gather information, organize data, draw a conclusion

• gather information, make a plan, organize data, draw a conclusion

• make a plan, organize data, draw a conclusion, gather information

• draw a conclusion, gather information, organize data, make a plan

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Mr. Charles is teaching his class about physical and chemical changes and is going to show his class a sheet of paper going through a chemical change.
What can he do to the paper to cause the chemical change?

• draw on it

• burn it

• tear it

• cut it

Tags

NGSS.MS-PS1-2

Todd is comparing two brands of batteries. He uses two identical flashlights to see

which battery lasts longer. What is the best reason for this experiment to be repeated?

• to check whether the results are consistent

• to make sure the flashlights were not broken

• to check that no one turned off one of the flashlights

• to make a prediction about a different brand of battery

Kara measured how far a book slid down a ramp. Then she taped sandpaper to the

ramp and measured the distance again. Brian repeated Kara’s experiment and got

different results. Which statement best describes what happened?

• Kara is right and Brian is wrong.

• Brian is right and Kara is wrong.

• Brian set up the experiment differently.

• The experiment is not a worthwhile investigation.

Krystal poured some milk into a glass. How does this action show that milk is a liquid and not a solid?

• The milk takes the shape of its container.

• The milk does not evaporate after it is poured.

• The milk changes temperature as it is poured.

• The amount of milk changes as it is poured into the glass.

Tags

NGSS.5-PS1-3

Davon was making iced tea for his family. First, he brewed tea into water and cooled it down with ice cubes. Then he added sugar to the pitcher of iced tea and stirred it.

Why is Davon stirring the iced tea?

• Stirring makes the iced tea colder.

• Stirring makes the sugar dissolve more quickly.

• Stirring keeps the sugar from forming into larger pieces.

• The sugar will not dissolve unless she stirs the iced tea.

Layla and Calvin are experimenting with different ways to separate mixtures into their original parts. Which method could NOT be used to separate sand from water?

• putting it through a fine-mesh strainer

• filtering it through filter paper

• allowing the water to evaporate

• using a magnet

Ms. Jones left some candles burning. After a while, the heat from the candles made

the wax begin to drip. Which describes the change that happened to the wax?

• physical change from a solid to a gas

• chemical change from a solid to a gas

• physical change from a solid to a liquid

• chemical change from a solid to a liquid

Tags

NGSS.MS-PS1-4