Science Review

A group of students conducts an experiment outside with a marble and a mound of dirt (to make a hill). They push the marble down the hill with different amounts of force. What should the students measure in this experiment to learn about how the mechanical energy of the marble is related to speed?

• They should measure the amount of time the marble rolls each time.

• They should measure the height of the hill.

• They should measure the time it takes the marble to travel the same distance each time it is pushed downhill.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

You are conducting an investigation to explore how pushing a toy car with different forces affects how fast a toy car moves on a flat surface. Which of the following is a key step in your investigation:

• For a strong push use a different car than for a light push

• Measure the mass of the car before conducting the investigation.

• Use a strong force and a light force to push the car and measure how far each car goes

• Push the car with one type of force and record the distance the car traveled.

Tags

NGSS.MS-PS2-2

Some cranes have the ability to pick up metal. Pick the correct statement which describes the type of force which allows the crane to pick up the metal against the force keeping the metal on the ground.

• The crane uses magnetism to pull the metal up against the force of gravity.

• The crane uses gravity to push the metal down against the force of magnetism.

• The crane uses magnetism to push the metal down against the force of gravity.

Tags

NGSS.MS-PS2-5

Students in a second grade science class were instructed to build a one-foot-long bridge strong enough to hold a half-pound weight. The data table shows what material some students chose to use to build their bridge. Which student chose the best materials?

• Anna

• Riley

• David

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-ETS1-3

Niuja and her friend Emma were eating popsicles outside on a hot sunny day. Which of the following statements represent what could happen to the popsicles if they aren't eaten quickly? Select TWO correct answers.

• The popsicles could melt, changing from a liquid to a solid.

• The popsicles could remain frozen as a solid.

• The popsicles could melt, changing from a solid to a liquid.

• The popsicles could remain frozen as a liquid.

• The melted popsicles could evaporate, changing from a liquid to a gas.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

When you fill up a glass with ice water during the summer time, moisture forms on the outside of the glass. What causes this moisture to form?

• The warm air is coming into contact with the cold glass.

• The water is leaking through the glass.

• The water is rising out of the glass and falling onto the outside of the glass.

• The water is coming from the sweat on the hand of the person drinking the water.

Tags

NGSS.MS-PS1-4

In science class, Edward put different objects in different containers. He listed his observations in the table. What can Edward conclude from his observations? Select TWO correct answers.

• A. Liquids and gasses do not take the shape of their containers.

• B. Liquids and solids take the shape of their container.

• C. Solids do not take the shape of their container.

• D. Liquids and gasses take the shape of their container.

Lorenzo uses the objects below to see which ones will float on a pond. Which object would NOT float on a pond?

• Tennis ball

• Flat rock

• Toothpick

• Empty bottle

A student collected this information during an investigation. What explanation best describes the results and matches what scientists know about magnets?

• Only flat metals are attracted to a magnet.

• Only gray metals are attracted to a magnet.

• Only some metals are attracted to a magnet.

Tags

NGSS.MS-PS2-3

What is the temperature in Thermometer B?

• 8°C

• 5°C

• 10°C

• 7°C

Tags

NGSS.MS-PS1-4