Forces and Friction

What type of force helps slow down a moving car?

• normal force

• gravitational force

• electrical force

• frictional force

Which types of forces can change the movement of objects?

• applied forces

• frictional forces

• gravitational forces

• electrical forces

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

_______________force keeps the Earth orbiting around the Sun.

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

What force exists between charged particles?

• Gravitational

• Applied

• Frictional

• Electrical

Tags

NGSS.MS-PS2-3

Which of these forces are contact forces?

• Electrical

• Magnetic

• Applied

• Normal

What is a hypothesis?

• a proven fact

• the solution to a problem

• a prediction or guess

• a question to solve

Tags

NGSS.HS-LS3-1

What is the independent variable in an experiment?

• the data collected or measured

• the observations made during the experiment

• what the scientist changes or tests in the experiment

• the solution to the problem

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A scientist grows three green bean plants in different types of soil to see what soil works best. The scientist measures the heights of the plants each week. What is the dependent variable in this experiment?

• green bean plants

• different types of soil

• the scientist

• the height of the plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A scientist grows three green bean plants in different types of soil to see what soil works best. The scientist measures the heights of the plants each week. What is the independent variable in this experiment?

• the different types of soil

• the heights of the plants

• the type of plant

• one week

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

A scientist grows three green bean plants in different types of soil to see what soil works best. The scientist measures the heights of the plants each week. What does the scientist keep the same or constant in this experiment?

• the type of soil

• green bean plants

• the height of the plants

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1