What is a force?

• A type of energy

• A kind of wave

• A push, pull, or twist on an object

• A form of motion

Tags

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What is necessary for a force to exist?

• A source of energy

• An object must be moving

• A visible effect

• Two objects must interact

Tags

NGSS.MS-PS2-1

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Which type of force involves physical contact?

• Gravitational force

• Friction

• Electrical force

• Magnetic force

What happens to an object when it is subjected to an unbalanced force?

• It changes temperature

• It changes color

• It accelerates

• It becomes heavier

Tags

NGSS.MS-PS2-2

What is velocity?

• The color of an object

• The weight of an object

• The speed of an object in a given direction

• The direction of an object

What indicates that an object is accelerating?

• It is moving in a straight line

• It is changing its velocity

• It is losing mass

• It is stationary

In the balanced force experiment, what keeps the person from falling through the chair?

• Unbalanced forces

• Balanced forces between the chair and the person

• Magnetic forces

• Gravitational pull from the earth

Tags

NGSS.MS-PS2-4

What causes the book to start moving in the unbalanced force experiment?

• The book's own weight

• Air resistance

• A strong enough push to overcome friction

• Magnetic interaction

Tags

NGSS.MS-PS2-2

In the tug-of-war game, what does it mean if the speedometer does not change?

• The game is broken

• There is no force applied

• Forces are unbalanced

• Forces are balanced

What does acceleration in the tug-of-war game indicate?

• Equal strength on both sides

• No forces acting

• Unbalanced forces

• Balanced forces

Tags

NGSS.MS-PS2-2