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On a sunny day, Emma is cutting branches from a tree in her yard. At midday, she takes a break, leaving a pile of branches and leaves on the ground. When she returns and gathers the branches, she notices the leaves are wilted and crisp. Which of the following correctly describes what happened to the leaves?

• The trees had not received water for a long time before being cut.

• The warm temperature caused moisture to evaporate from the leaves.

• The nutrients cannot reach the leaves if the tree's branches are not upright.

• The leaves had been covered in frost the week before, but had not wilted until now.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Luis is observing ice cubes as they change. He drew this picture. What does the picture show?

• A chemical change called boiling

• A physical change called melting

• A chemical change called cooking

• A physical change called precipitation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following explanations best describes what will happen to water when heat is added to it?

• a liquid becomes a gas

• a liquid becomes a solid

• a gas becomes a liquid

• a gas becomes a solid

Tags

NGSS.MS-PS1-4

Daniel has a list of chores to do around the house. Which of his chores is an example of a chemical change?

• oiling a squeaky door hinge

• sewing a hem on a pair of pants

• digging weeds in the flowerbeds

• cooking eggs for breakfast

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which of these pictures shows matter that has undergone a chemical change caused by a temperature change?

• 
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• 
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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which of the following describes a physical change to a piece of chicken?

• roasting the chicken

• grilling the chicken

• baking the chicken

• slicing the chicken

Juan wanted to know which type of flowers bees prefer in his garden. He spend a few hours outside recording how many times bees visited each type of flower in his garden. Which statement is based on direct evidence Juan collected during this investigation?

• If there were blue flowers, that would have been the most popular flowers in the garden.

• The bees liked the red flowers the most because they tasted the best.

• Twice as many bees visited the yellow flowers then the red flowers.

• The bees probably didn't visit the white flowers as much because they are hard to see.

Susan made tea for her guests by placing a tea bag in a cup of hot water and then adding a couple drops of lemon juice and two teaspoons of sugar. What most likely happened to the ingredients that were added to the hot water?

• Everything added to the cup dissolved in the water

• Only the lemon juice dissolved in the water

• Only the sugar dissolved in the water

• Only the tea dissolved in the water

Tags

NGSS.MS-PS1-2

The same amount of sugar crystals were placed in two cups of water. One cup contained hot water (no sugar crystals can be seen after 30 secs) and one cup contained cold water (sugar crystals are still visible after 30 secs). Which statement best describes the differences seen in the cups above?

• Sugar crystals take longer to dissolve in cold water

• The sugar crystals placed in the hot water were probably smaller than those placed in the cold water

• Sugar crystals do not dissolve in water

• Sugar crystals take longer to dissolve in hot water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Andrew wants to conduct an experiment to learn if he can use high temperatures to dissolve salt in water. Which term is best used to classify salt mixed in water at room temperature?

• A mixture

• A solution

• A compound

• An element