Earth continuously rotates on its axis while also moving in an orbit. About how much time does it take for Earth to make one complete rotation on its axis?

• 24 hours

• 30 days

• 60 minutes

• 365 days

Tags

NGSS.MS-ESS1-1

For a class demonstration, Jose turned off the lights in the classroom. He then shined light from a flashlight through a hole in a piece of cardboard. The class saw the narrow beam of light continue until another student placed a mirror in the light’s path. The light did not continue past the mirror because —

• the light was refracted back to the light source

• light travels in a straight line and cannot go around objects

• the mirror absorbed all the light

• light cannot travel very far

Tags

NGSS.MS-PS4-2

Canyons and mesas are two landforms found in the western part of the United States. Which statement best describes how canyons and mesas are similar?

• Both were part of a desert that was reshaped by a flood.

• Both were part of a mountain that was weathered by ice.

• Both were formed by erosion by wind and water

• Both were formed by slow-moving glaciers

Tags

NGSS.MS-ESS2-2

Lupita recorded the time it took for all the water in a puddle on a sidewalk to evaporate after a rain. Which kind of energy causes water to evaporate?

• Sound energy from passing cars

• Light energy from streetlights

• Mechanical energy from nearby streets

• Thermal energy from the environment

Tags

NGSS.MS-ESS2-4

Ms. Roy's class observed a glass of ice and water. The glass is dry on the outside. After ten minutes students see drops of water on the outside of the glass. Which statement best explains the students’ observations?

• The cold water inside the glass rises and then slides down the outside of the glass.

• The ice in the glass melted and caused the water to overflow the glass.

• The water moved to the outside surface through tiny holes in the glass.

• The water vapor in the air changes to a liquid when it touches the cold glass.

Tags

NGSS.MS-PS1-4

A dinosaur fossil is shown.

Which question can scientists most likely answer from studying the fossil of the dinosaur?

• What was the type of food the dinosaur ate?

• How fast was the heart of the dinosaur beating?

• What was the pattern on the skin of the dinosaur?

• How many eggs were in the nest of the dinosaur?

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Bianca prepared a snack that consisted of grapes, pecans, and strawberries sprinkled with white powdered sugar. She stored the snack in a refrigerator. An hour later she observed that the powdered sugar could no longer be seen but the fruit and nuts had not changed in appearance. What most likely happened to the sugar in the mixture?

• The sugar evaporated at the lower temperature in the refrigerator without causing any changes to the fruit and nuts.

• The sugar was more dense than the other foods in the mixture, so it settled to the bottom of the container.

• The sugar dissolved in the moisture on the fruit.

• The sugar absorbed energy from the nuts and melted into a colorless liquid.

Tags

NGSS.MS-PS1-2

The chart lists plants and animals interacting with parts of an environment.

1. A hummingbird dips its beak inside a flower.

2. A lizard burrows into the sand to stay cool.

3. A fish absorbs oxygen through its gills.

4. A cactus wren eats seeds from a cactus fruit.

5. A sea star clings to a rock in a tidal pool.

6. A bear scratches its back against a tree.

Which statements describe an animal interacting with a living part of the environment?

• Statements 2, 3, and 4 only

• Statements 2, 5, and 6 only

• Statements 1, 3, and 5 only

• Statements 1, 4, and 6 only

Tags

NGSS.MS-LS2-2

A group of students is given four small cubes of the same size and instructed to place them in a beaker of water. One cube floats to the surface of the water. Two of the cubes float in the middle of the beaker under the surface of the water. The last cube sinks to the bottom of the beaker. Which conclusion is best supported by what the students observed?

• Each cube is made of a different type of solid material.

• Two of the four cubes are soluble in water.

• All four cubes have different masses.

• One of the cubes is more dense than the other three.

Tags

NGSS.MS-PS2-4

Which effect would most likely occur if a six-lane highway were built through an ecosystem?

• Water pollution would decrease.

• Air pollution would decrease.

• Habitats available to animals would be reduced.

• Competition for resources would be reduced.

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5