24/25 1st Semester Midterm

What is an independent variable in an experiment?

• A variable that is kept constant

• A variable that is changed by the scientist

• A variable that is observed for changes

• A variable that is dependent on others

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-4

What is a controlled variable in an experiment?

• A variable that is changed

• A variable that is kept constant

• A variable that is observed for changes

• A variable that depends on others

What is a dependent variable in an experiment?

• A variable that is changed

• A variable that is kept constant

• A variable that is observed for how it responds

• A variable that is independent

Tags

NGSS.MS-PS2-2

According to Newton's 1st Law of Motion, an object at rest will stay at rest unless what happens?

• It is acted upon by a net force

• It is in a vacuum

• It is moving at a constant speed

• It is in space

What is the tendency of an object to resist change called?

• Acceleration

• Inertia

• Velocity

• Momentum

According to Newton's 2nd Law of Motion, force equals what?

• Mass plus acceleration

• Mass minus acceleration

• Mass times acceleration

• Mass divided by acceleration

Tags

NGSS.MS-PS2-2

What is Newton's 3rd Law of Motion?

• When a force is applied, there is an equal force applied in the opposite direction.

• An object in motion stays in motion.

• Force equals mass times acceleration.

• Energy cannot be created or destroyed.

Tags

NGSS.MS-PS2-1

When the total (sum) of forces acting on an object (net force) is zero.

• Balanced forces

• Unbalanced forces

• Gravitational forces

• Magnetic forces

Tags

NGSS.MS-PS2-2

How do you find the net force acting on an object?

• Add all the forces together.

• Add forces moving in the same direction on an object, and subtract the opposite forces.

• Multiply the forces by the mass.

• Divide the forces by the acceleration.

Tags

NGSS.MS-PS2-2

What is the unit of measurement for force?

• Joule

• Newton

• Watt

• Pascal