NC Science

The picture shows the water cycle. In which part of the water cycle does water change from a liquid to a gas?

• part 1

• part 2

• part 3

• part 4

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Mrs. Gilbert’s class took a trip to a lake. The students observed a dark mark on the rocks above the surface of the lake. Mrs. Gilbert said that the mark showed where the water level in the lake had been in the past. What MOST likely happened to lower the water level in the lake?

• Ice formed over the lake.

• Rainfall around the lake increased.

• Lightning struck the surface of the lake.

• Air temperatures around the lake increased.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Since Earth radiates heat into outer space, why is Earth’s surface NOT becoming colder?

• Earth constantly takes in more heat from the Sun.

• Earth has forests that provide heat through photosynthesis.

• Earth has oceans that store heat.

• Earth absorbs extra heat from molten lava.

Tags

NGSS.MS-PS3-4

Water on a plate dries faster than the same amount of water in a small cup. The plate and small cup are made of the same type of material. Which statement BEST explains why this occurred?

• The small cup keeps the water colder than the plate.

• The plate allows the water to move more than the small cup.

• The small cup allows the water to stick to it more than the plate.

• A larger surface area of water touches the air on the plate than in the cup.

A student uses a terrarium to model the water cycle. Before putting the lid on the jar, the student waters the plants and puts the terrarium in a sunny window. What part of the water cycle occurs inside the terrarium only after the plants have been added?

• precipitation

• evaporation

• condensation

• transpiration

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

A glass of cold water is set on a desktop. Later that day, beads of water had formed on the outside of the glass. The MOST likely explanation for the beads of water is that

• some water dripped over the side.

• the water soaked through the glass.

• water vapor condensed on the sides.

• someone sprayed the glass with water.

Tags

NGSS.MS-PS1-4

Chris fit the pieces of a space shuttle model together. Which statement BEST describes how the pieces compare to the completed model?

• Each piece is stronger than the completed model.

• The mass of the completed model equals the mass of all the pieces.

• Each piece is made from a different material than the completed model.

• The mass of the completed model is more than the mass of the all the pieces.

Tags

NGSS.MS-PS1-5

Julia is following a recipe to make batter for a cake. She uses a scale to weigh each ingredient separately. Julia can BEST use this information to predict the weight of the mixed batter by

• adding the weights of each ingredient together.

• multiplying the weights of each ingredient together.

• dividing the weight of the wet ingredients from the weight of the dry ingredients.

• subtracting the weight of the wet ingredients from the weight of the dry ingredients.

A type of cold pack has two separate sections inside. One section contains a liquid and the other section contains a powder. When the cold pack is squeezed, the section that holds the liquid breaks. When the liquid combines with the powder, the pack becomes very cold. Which is the BEST explanation why the temperature of the pack decreases when the liquid and powder combine?

• A mixture forms.

• A solution forms.

• A chemical change occurs.

• Thermal energy is used.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

Mrs. Gilbert’s class mixed some materials. They made a table of the materials and the products after the materials combined. Based on the table, which materials mixed to form a new substance?

• water and flour

• water and salt

• iodine and flour

• iodine and salt

Tags

NGSS.MS-PS1-2