Select the correct answer. Darryl throws a basketball at the gym floor. The ball bounces once on the floor and comes to rest in his coach’s hands. At which point are all the forces on the basketball balanced?

the moment the ball comes to a complete rest

the moment the ball leaves Darryl’s hand

the moment the ball touches the floor

when the ball starts falling downward before coming to rest

Select the correct answer. Which sentence states Newton’s third law?

If two objects collide, each object exerts a force equal to and in the opposite direction of the other.

If two objects collide, each object exerts a force in the same direction as the other.

A collision between a moving object and a stationary object is elastic.

A collision between a moving object and a stationary object is inelastic.

If two objects collide, the moving object exerts a greater force than the stationary object.

Select the correct answer. Robert is hosting a backyard barbecue. He uses a charcoal fire to grill the chicken. The chicken cooks, but it never touches the fire directly. What energy transformation occurs as the chicken cooks?

chemical potential energy → radiant energy → thermal energy

thermal energy → chemical potential energy → motion energy

chemical potential energy → electric potential energy

motion energy → chemical potential energy → motion energy

radiant energy → electric potential energy → chemical potential energy

Select the correct answer. Jay bought a toy car. To make the car move, he must turn a key attached to a spring. Turning the key winds the spring tight. The toy car moves when the key is released and the spring unwinds. What’s the main transformation of energy in this example?

potential energy to motion energy

chemical energy to electric energy

chemical energy to motion energy

electric energy to motion energy

electric energy to potential energy

Select the correct answer. Which object has the least amount of kinetic energy?

A bicycle locked to a bike rack

A soccer ball rolling down a hill

Select the correct answer. Water is used to cool down automobile engines when they get hot. Why is water used as a coolant?

Water has a high heat capacity.

Water is a good radiator of heat.

Select the correct answer. According to Newton’s law of universal gravitation, which statement is true?

Falling objects accelerate as they approach the ground.

Lighter objects experience a higher acceleration than heavier objects.

The weight of an object increases as it moves away from the ground.

Lighter objects experience a lower acceleration than heavier objects.

The mass of an object increases as it moves closer to the ground.

Select all the correct answers. A silver coin rubs vigorously against a wool cloth. The cloth becomes positively charged. Which statements are true?

The silver coin gained electrons.

The silver coin lost electrons.

Select all the correct answers. Jeff puts on a leather jacket over his sweater. The sweater becomes negatively charged. Which statements about Jeff’s situation explain why the sweater became negatively charged?

The sweater has a tendency to attract electrons.

The leather jacket has a lower tendency to attract electrons than the sweater.

The sweater has a tendency to attract protons.

The leather jacket has a tendency to attract electrons.

The leather jacket has a tendency to attract protons.

Select all the correct answers. Which two statements are true about all generators?

They convert motion energy to electric energy.

They use the relative motion of a magnet and a coil of wire.

They have a fixed pair of magnets and a rotating metal coil.

They're powered by fossil fuels.

They convert electric energy to motion energy.

Select all the correct answers. Which two statements about an electric motor are true?

It depends on the relative motion of a magnet and a current-carrying wire.

It converts electric energy to motion energy.

It converts motion energy to electric energy.

It depends on a rotating magnet to create a magnetic field.

It doesn’t require electricity because it uses electromagnetism.

This circuit does not work because…

there is a break in the circuit

the bulbs are not connected properly

the single cell is not powerful enough

Which of the following answer choices correctly describes the image?

Parallel circuit - Bulbs are lit

Parallel circuit - Bulbs are off

Select the correct answer. Which of the following is NOT a heterogeneous mixture?

Salad with lettuce, tomatoes, and cucumbers

Select the correct answer. Which statement best describes a compound?

A substance made of two or more elements chemically combined

A mixture of two or more substances that can be separated physically

A substance made of only one type of atom

A mixture in which the components are easily seen

Select the correct answer. Which statement is true about compounds?

They are formed by chemically combining two or more elements

They are made of only one type of atom

They can be separated by physical means

Physical Science Final Exam Quiz

1.

HOTSPOT QUESTION

1 min • 1 pt

Select all the correct locations on the image. Which items are matter?

2.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Select all the correct answers. Consider this statement: Air is matter. Which facts best support the statement?

Air is not an element.

Air is essential for life to exist.

Air has mass.

To float on air is to be happy.

Balloons can be filled with air.

Answer explanation

Air has mass, which is a key characteristic of matter. Additionally, balloons can be filled with air, demonstrating that air occupies space and can be contained, further supporting that air is indeed matter.

Tags

NGSS.MS-ESS2-5

3.

LABELLING QUESTION

1 min • 1 pt

Drag each tile to the correct box. Sort the types of energy according to the order in which they move through this system: Water stored in dams falls freely with the force to make a turbine move. The turbine moves and produces electricity. This electric energy is supplied to homes. At home, we use electricity for heating, cooling, and lighting.

e

f

g

h

Mechanical Energy -> Electrical Energy -> Potential Energy -> Kinetic Energy

Kinetic

Kinetic Energy -> Potential Energy -> Electrical Energy -> Mechanical Energy

Electrical

Potential Energy -> Mechanical Energy -> Electrical Energy -> Thermal Energy

Mechanical

Potential Energy -> Kinetic Energy -> Mechanical E

Potential

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Read the following sentence. A popular tourist attraction, the crater is used by NASA to train astronauts because its terrain resembles the surface of the moon. Which word has the same root word as the word terrain?

determine

terrible

territory

Answer explanation

The word 'terrain' comes from the Latin root 'terra', meaning land. 'Territory' shares this root, referring to land or area. 'Determine' and 'terrible' do not share this root, making 'territory' the correct choice.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Read passage 30963 to answer this question. Which is the purpose of this article?

to explain the effects of the impact of a meteorite

to demonstrate a lesson about the importance of scientific research

to describe new technology that scientists use to study meteorites

Answer explanation

The article focuses on explaining the effects of meteorite impacts, making 'to explain the effects of the impact of a meteorite' the correct choice. The other options do not align with the main purpose of the passage.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Select the correct answer. Avogadro’s number is a constant that helps scientists count atoms and molecules. It is approximately equal to 602,200,000,000,000,000,000,000. How is this number expressed in scientific notation?

6.02 x 10^1

6.02 x 10^18

6.02 x 10^23

6.02 x 10^2

6.02 x 10^23

Answer explanation

Avogadro's number is approximately 602,200,000,000,000,000,000,000. In scientific notation, this is expressed as 6.02 x 10^23, which represents the number of particles in a mole.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Select the correct answer. Which of the following is a physical model of the Sun?

an equation that describes the Sun’s motion

a chart that lists the temperatures of different parts of the Sun

a computer program that shows how the Sun changes over time

a paragraph that describes the Sun’s structure

a small yellow ball that represents the Sun

Answer explanation

A small yellow ball that represents the Sun is a physical model, as it provides a tangible representation of the Sun's size and appearance. The other options are abstract or descriptive, not physical models.

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Select the correct answer from each drop-down menu. A ball starts from rest. It rolls down a ramp and reaches the ground after 4 seconds. Its final velocity when it reaches the ground is 7.0 meters/second. The initial velocity of the ball is [ ] meters/second, and its acceleration is [ ] meters/second².

Initial velocity: 0, Acceleration: 1.75

Initial velocity: 0, Acceleration: 7

Initial velocity: 1.75, Acceleration: 7

Initial velocity: 7, Acceleration: 0

Initial velocity: 1.75, Acceleration: 0

Answer explanation

The ball starts from rest, so the initial velocity is 0 m/s. To find acceleration, use the formula: final velocity = initial velocity + (acceleration × time). Rearranging gives acceleration = (final velocity - initial velocity) / time = (7 - 0) / 4 = 1.75 m/s².

Tags

NGSS.MS-PS3-1

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Select the correct answer. An airplane is flying at a constant speed in a positive direction. It slows down when it approaches the airport where it's going to land. Which term describes the slowing of the plane?

stationary

positive velocity

positive acceleration

negative acceleration

constant velocity

Answer explanation

The airplane is slowing down, which means it is experiencing a decrease in speed. This is referred to as negative acceleration, as it indicates a reduction in the velocity of the plane.

Tags

NGSS.MS-PS3-5

10.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Select the correct answer from each drop-down menu. Andrew pokes a marble, and the marble rolls down a ramp. The marble moves with speed. Which forces are acting on the marble in this situation?

gravitational force pulls it down

an applied force

tension

normal

friction

Answer explanation

The gravitational force pulls the marble down the ramp, while Andrew's poke provides an applied force that initiates its motion. Tension, normal, and friction forces are not significant in this scenario.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Physical Science Final Exam

46 questions

Select all the correct locations on the image. Which items are matter?

Select all the correct answers. Consider this statement: Air is matter. Which facts best support the statement?

Air has mass, which is a key characteristic of matter. Additionally, balloons can be filled with air, demonstrating that air occupies space and can be contained, further supporting that air is indeed matter.

Read the following sentence. A popular tourist attraction, the crater is used by NASA to train astronauts because its terrain resembles the surface of the moon. Which word has the same root word as the word terrain?

The word 'terrain' comes from the Latin root 'terra', meaning land. 'Territory' shares this root, referring to land or area. 'Determine' and 'terrible' do not share this root, making 'territory' the correct choice.

Read passage 30963 to answer this question. Which is the purpose of this article?

The article focuses on explaining the effects of meteorite impacts, making 'to explain the effects of the impact of a meteorite' the correct choice. The other options do not align with the main purpose of the passage.

Select the correct answer. Avogadro’s number is a constant that helps scientists count atoms and molecules. It is approximately equal to 602,200,000,000,000,000,000,000. How is this number expressed in scientific notation?

Avogadro's number is approximately 602,200,000,000,000,000,000,000. In scientific notation, this is expressed as 6.02 x 10^23, which represents the number of particles in a mole.

Select the correct answer. Which of the following is a physical model of the Sun?

A small yellow ball that represents the Sun is a physical model, as it provides a tangible representation of the Sun's size and appearance. The other options are abstract or descriptive, not physical models.

The ball starts from rest, so the initial velocity is 0 m/s. To find acceleration, use the formula: final velocity = initial velocity + (acceleration × time). Rearranging gives acceleration = (final velocity - initial velocity) / time = (7 - 0) / 4 = 1.75 m/s².

Select the correct answer. An airplane is flying at a constant speed in a positive direction. It slows down when it approaches the airport where it's going to land. Which term describes the slowing of the plane?

The airplane is slowing down, which means it is experiencing a decrease in speed. This is referred to as negative acceleration, as it indicates a reduction in the velocity of the plane.

Select the correct answer from each drop-down menu. Andrew pokes a marble, and the marble rolls down a ramp. The marble moves with speed. Which forces are acting on the marble in this situation?

The gravitational force pulls the marble down the ramp, while Andrew's poke provides an applied force that initiates its motion. Tension, normal, and friction forces are not significant in this scenario.

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