Semester 1 Exam: 2020-2021

The main reason a baseball comes down when a boy tosses it up into the air is —

• magnetism is pulling the ball down

• the boy cannot see to catch it

• gravity is pulling down on the ball

• gravity pushes the ball in the air

Tags

NGSS.MS-PS2-4

Why does a rolling ball stop?

• Gravity
• Friction
• Waterfalls
• Sand

Tags

NGSS.MS-PS3-5

What two things determine the gravity of an object?

• mass & weight

• mass & distance

• density & mass

• volume & distance

Tags

NGSS.MS-PS2-4

Which statement about gravity is true?

• gravity causes objects to pull towards one another

• gravity causes objects to push away from each other

• gravity only takes place between planets

• the moon doesn't have any gravity

Tags

NGSS.MS-PS2-4

An object with mass has gravity.

• True
• False 

Tags

NGSS.MS-PS2-4

The amount of matter in an object.

• force 
• mass
• weight 
• pressure 

Tags

NGSS.MS-PS1-5

As mass increases, what happens to gravitational force?

• increases
• decreases
• stays the same
• i don't know

Tags

NGSS.MS-PS2-4

What is Newton's First Law?

• Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
• Force = mass x acceleration
• For every action there is an equal and opposite reaction

Which type of force(s) will cause a change in an object's motion?

• gravity
• speed
• balanced forces
• unbalanced forces

Tags

NGSS.MS-PS2-2

What is the formula for force?

• F=M/A
• F=A/M
• F=M*A
• F=M*F

Tags

NGSS.MS-PS2-2