James is making a car that runs on solar energy. Sometimes the car works fine; other times it does not. What is the BEST way for James to solve this problem?

• start designing a different car

• discuss the car problems with other scientists

• collect evidence about when the car works well

• do repeated trials without making changes to the car

Tags

NGSS.MS-ETS1-3

Scientists stay in touch in many ways. What is the MOST important reason that scientists work so hard to stay in touch?

• to discuss their work and ideas

• to keep up with the local news

• to make new friends

• to look important

Jamie wants to know the mass of a red rock that she found. She weighed the rock twice and got a different mass each time. Which action will help Jamie find the correct mass of the rock?

• measure the mass of another object

• measure the mass of a different rock

• measure the mass of two rocks together

• measure the mass of the red rock again

Two scientists are working on the same experiment. When it is done, they each have a different conclusion. Which is the BEST action for the scientists to take?

• The scientists should each accept only their own conclusion.

• The scientists should accept both conclusions even though they are different.

• The scientists cannot accept either conclusion because neither could be correct.

• The scientists should check their evidence again before accepting a conclusion.

Tags

NGSS.HS-LS2-6

Why do sidewalks get so hot during the summertime?

• the energy from the moon heats the sidewalks

• the energy from the sun heats the sidewalks

• the energy from the wind heats the sidewalks

• the sidewalks get heat from the people who walk on it

What happens to an ice cream cone on a hot, sunny day?

• it freezes

• it melts

• it cracks

• it turns blue

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is measured with a pan balance?

• volume of an object

• texture of an object

• mass of an object

• perimeter around an object

Which trait shows the biggest difference between an adult and a baby?

• size

• color

• texture

• odor

Which cylinder contains the same volume of liquid as Carol's graduated cylinder?

• Cylinder 1

• Cylinder 2

• Cylinder 3

• Cylinder 4

In which animal group would you classify this animal?

• mammal

• fish

• arthropod

• reptile

Tags

NGSS.MS-LS4-2