Second Semester Review Part 1

Final Exam Review

Physical Science - Second Semester

Poll

Which unit was your favorite this semester?

• Motion and Forces

• Egg Drop Device Challenge

• Energy and the Water Wheel Device Challenge

• Electricity

• Waves

Open Ended

Why was that unit your favorite?

Motion Unit

Words to Know

• Speed

• Velocity

• Acceleration

Multiple Choice

What is speed?

• how far you go

• how much distance is covered over a period of time

• how fast you accelerate

• the change in the location of a object

Multiple Choice

A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?

• 10 m/s

• 1000 m/s

• 100 seconds

• 10 seconds

Multiple Choice

What does this graph represent?

• Constant Speed

• Acceleration

• Not moving

Multiple Choice

Which runner had the greatest average speed?

• A

• B

• C

• It was a tie

Multiple Choice

Velocity is both ____ and _____. 

• speed , direction 

• direction, mass

• volume, density 

• direction, magnitude 

Multiple Choice

Which of the following represents a velocity?

• 40 m

• 40 m north

• 40 m/s

• 40 m/s north

Multiple Choice

Two horses are running in a field.  The gray horse runs 12 m/s north.  The black horse runs 12 m/s east.  
Which is true about their motions?

• Equal speeds.

• Equal velocities.

• Equal distances.

• Equal displacements.

Multiple Choice

A cheetah runs with an average speed of 32 m/s for 30 seconds.  How far did the cheetah run?

• 960 m

• 1.07 m

• 0.94 m

• 62 m

Multiple Choice

What does this graph represent?

• Constant speed

• Acceleration

• Not moving

Multiple Choice

What is the speed of the red line?  

• 4 m/s 

• 16 m/s 

• 32 m/s 

• 2 m/s 

Forces and Newton's Laws Unit

​Words to Know

• Newton's First Law

  • Balanced and Unbalanced Forces

• Newton's Second Law

  • Force = mass x acceleration

  • Force of Gravity and Weight

• Newton's Third Law

  • Equal and opposite forces

Multiple Choice

When an unbalanced force acts on an object, the force ______________________.

• changes the motion of the object

• is cancelled by another force

• does not change the motion of an object

• is equal to the weight of the object

Multiple Choice

When two equal forces act in opposite directions on an object, they are called ______________________.

• frictional force

• balanced force

• centripetal force

• gravitational force

Multiple Choice

The resistance of an object to any change in its motion is called ______________________.

• inertia

• friction

• gravity

• weight

Multiple Choice

"For every action, there is an equal and opposite reaction."

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Multiple Choice

Force = Mass x Acceleration

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Multiple Choice

"An object in motion (or at rest) will to stay in motion (or at rest) until an outside force acts upon it."

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

Multiple Choice

A Newton is a unit of...

• force

• inertia

• acceleration

• velocity

Multiple Choice

A picture is hanging on a wall and does not move.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

Pushing a child on a swing is easier than pushing an adult on the same swing, because the adult has more inertia.

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

A rocket is sent into space.  When the power dies out, the rocket will just keep floating and moving in space forever (unless an unbalanced force, such as a meteor, runs into it).

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of them

Multiple Choice

45 m/s² is the... 

• Mass

• Force 

• Acceleration

• weight

Multiple Choice

A force of 250 N is applied to an object that accelerates at a rate of 5 m/s². What is the mass of the object? To solve this problem you must do -

• 250 ÷ 5

• 5 ÷ 250

• 250 x 5

Multiple Choice

A 50 kg skater pushed by a friend accelerates 5 m/s². How much force did the friend apply? To solve this problem you must do -

• 50 ÷ 5

• 5 ÷ 50

• 50 x 5

Momentum (Egg Drop Unit)

Words to Know

Momentum = mass x velocity

Multiple Choice

The momentum of an object depends upon the object's ___________&_____________.  

• size and shape

• mass and speed

• mass and veloctiy

• mass and energy

Multiple Choice

What is the unit for mass?

• m/sec

• kg/sec

• kg

• kg m/sec

Multiple Choice

What is the unit for velocity?

• m/sec

• kg/sec

• kg/m

• kg x m/sec

Multiple Choice

What is the unit for momentum?

• m/sec

• kg/sec

• kg/m

• kg x m/sec

Multiple Choice

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 

• 55 kg*m/s

• 100 kg*m/s

• 250 kg*m/s

• 500 kg*m/s

Multiple Choice

Which of the following has the MOST momentum? (they are all rolling at the same velocity)

• rolling ping-pong ball

• rolling bowling ball

• rolling soccer ball

• rolling basketball