Quiz about Science semester exam review

Question 1

Two Great Snipe birds are migrating. Both birds have a mass of 100 grams and are flying at 90 kilometers per hour. Bird R is flying 2.0 km above the ground, and Bird Q is flying 2.5 km above the ground.

Based on the information above, which statement best describes the energy of the two birds?

Accepted Answer

Bird Q and Bird R have the same kinetic energy but different potential energy.

Answer

Bird Q and Bird R have the same kinetic energy and potential energy.

Answer

Bird Q and Bird R have no kinetic energy but have the same potential energy.

Answer

Bird Q and Bird R have the same potential energy but different kinetic energy.

Question 2

According to the above diagram, at what point would the roller coaster car have the greatest potential energy?

Accepted Answer

3

Answer

4

Answer

5

Answer

6

Question 3

According to the above diagram, at what point would the roller coaster car have the greatest kinetic energy?

Accepted Answer

5

Answer

3

Answer

4

Answer

6

Question 4

A rock that falls off a cliff represents both potential and kinetic energy. Which statement best represents the energy transformation involved in this scenario?

Accepted Answer

As the potential energy decreases, the kinetic energy increases.

Answer

As the potential energy decreases, the kinetic energy decreases.

Answer

As the potential energy increases, the kinetic energy increases.

Answer

As the potential energy increases, the kinetic energy stays the same.

Question 5

The graph below shows the position of a moving object from 0 to 5 seconds.

According to the above information and graph, which of the following statements is true for the moving object?

Accepted Answer

The moving object is accelerating and changing its speed throughout the measurement.

Answer

The moving object is traveling at a constant speed throughout the measurement.

Answer

The moving object is slowing down and finally stops at the 5 second mark.

Answer

The distance the moving object travels is the same for each second.

Question 6

A ball is given a single push up an inclined plane as shown below.

Which of the following will NOT change as a result of the unbalanced force of gravity?

Accepted Answer

Mass

Answer

Position

Answer

Speed

Answer

Direction

Question 7

Students placed a steel ball at the top of a long piece of tubing track. As the ball rolled down the track, the students measured the distance the ball had traveled at various times. The graph below is a record of their data.

According to the information and graph shown above, what unbalanced force is affecting the steel ball the most and how is it affecting the ball's motion?

Accepted Answer

Gravity is the greatest unbalanced force, and it is causing the ball to speed up.

Answer

Friction with the track is the greatest unbalanced force, and it is causing the ball to slow down.

Answer

Friction with the air is the greatest unbalanced force, and it is causing the ball to slow down.

Answer

The initial push of the ball is the greatest unbalanced force, and it is causing the ball to

Question 8

The model shows the forces applied when two students push on a box.

Which statement does the model NOT accurately represent?

Accepted Answer

The two forces acting on the box are equal.

Answer

The forces on the box are acting in opposite directions.

Answer

The two forces acting on the box are unequal.

Answer

The box will move in the direction of the greater force.

Question 9

The diagram represents two students pushing and pulling an object in the same direction.

Which statement best describes the result of the forces?

Accepted Answer

The object will move in the direction of the combined forces.

Answer

The object will not move because the forces are not the same.

Answer

The lesser force applied is not enough to move the object.

Answer

The combined forces on the object cancels each other out.

Question 10

Observe the inclined plane and ball in the above image. If the ball rolls down the inclined plane in the direction of the arrow in 2.42 seconds, what is the average speed of the ball during the roll?

Accepted Answer

2.07 m/s

Answer

4.96 m/s

Answer

1.65 m/s

Answer

1.24 m/s

Question 11

A student who was training for a cross-country race jogged for 2.0 hours and covered a distance of 14.0 kilometers. What was the average speed of the student?

Accepted Answer

7.0 km/hr

Answer

28.0 km/hr

Answer

12.0 km/hr

Question 12

During an investigation, students placed a toy car at the top of a ramp and recorded the distance and time at different intervals. The graph shown above is a record of their data.

What is the average speed of the toy car between 3 and 5 seconds of the investigation?

Accepted Answer

6.5 m/s

Answer

2.0 m/s

Answer

4.0 m/s

Answer

13.0 m/s

Question 13

The graph below shows the distance and time a cyclist traveled on a 4.0 hour ride.

Which of the following statements is true based on the data graphed above?

Accepted Answer

The average speed of the cyclist in the first two hours was 15.0 km/hr.

Answer

The cyclist traveled at a constant speed throughout the ride.

Answer

The fastest speed of the cyclist was in the last hour of the ride.

Answer

Between the second and third hour of the ride, the cyclist traveled 30 km.

Question 14

A dog walks away from home at a constant pace for 20 minutes. Next, he stops for a 10 minute nap under a tree. Finally, he walks back home at a constant pace and comes to a stop.

Which graph below best represents the motion of the dog in terms of distance from home over time?

Accepted Answer

Question 15

The graph below shows the motion of a car.

Which statement below best describes the motion of the car?

Accepted Answer

The car travels at a constant speed for two minutes, increases its speed over two minutes, and then travels at a constant speed for two more minutes.

Answer

The car is stopped for two minutes, travels at a constant speed for two minutes, and then stops.

Answer

The car is stopped for two minutes, increases its speed over two minutes, and then stops.

Answer

The car increases its speed for two minutes, travels at a constant speed for two minutes, and then increases its speed over the next two minutes.

Question 16

A child drove a remote control car on a tile floor for a distance of 1.6 m. The graph represents the motion of the car.

Which description of motion is best represented by this graph?

Accepted Answer

The speed of the car is constant.

Answer

The speed of the car is decreasing.

Answer

The speed of the car is increasing.

Answer

The speed of the car is zero.

Question 17

A student used a wind-up toy to determine the distance the toy could travel in 10 seconds. At one point, the toy stopped and the student had to rewind it.

At what time interval was the toy stopped?

Accepted Answer

5-7 s

Answer

0-2 s

Answer

2-5 s

Answer

7-12 s

Question 18

Which statement best explains how a ramp makes it easier to move a heavy object over a certain distance?

Accepted Answer

It decreases the amount of force by increasing the distance.

Answer

It decreases the amount of force by decreasing the distance.

Answer

It decreases the mass of the object.

Answer

It increases the mass of the object.

Question 19

A student wants to safely be able to move a cart up a ramp and onto a truck. To see which ramp would be most beneficial, the student investigates to see how the length of the ramp changes the amount of force needed to move the cart (measured in Newtons, N). Which of the following conclusions can the student make from the investigation about how to safely move the cart?

Accepted Answer

As the length of the ramp increases, the amount of force needed decreases.

Answer

As the height of the ramp increases, the amount of force needed increases.

Answer

As the length of the ramp increases, the amount of force needed increases.

Answer

As the height of the ramp increases, the amount of force needed decreases.

Question 20

A student is helping his neighbor move a new dishwasher into their house. The house has three steps on the front porch that cause the porch to be 2 meters above the ground.

Which method requires the least amount of force to get the dishwasher from the ground to the porch?

Accepted Answer

Place an inclined plane that is 10 meters long over the stairs, and roll the dishwasher up the inclined plane with a partner.

Answer

Lift the dishwasher up one step at a time with a partner, and rest one minute between steps.

Answer

Place an inclined plane that is 5 meters long over the stairs, and roll the dishwasher up the inclined plane with a partner.

Answer

Use a fixed pulley attached to the roof of the porch to lift the dishwasher with a partner.

Question 21

Which inclined plane requires the most force to push the ball to the top?

Accepted Answer

Question 22

Classify the following:

ZnO

Accepted Answer

Compound

Answer

Element

Question 23

Classify the following:

Cl

Accepted Answer

Element

Answer

Compound

Question 24

Classify the following:

C₆H₁₂O₆

Accepted Answer

Compound

Answer

Element

Question 25

Classify the following:

P

Accepted Answer

Element

Answer

Compound

Question 26

Classify the following:

H₂

Accepted Answer

Element

Answer

Compound

Question 27

Striking a match; combining vinegar and baking soda to form CO₂ gas; and breaking light glow sticks are all examples of what type of energy?

Accepted Answer

Chemical energy

Answer

Light energy

Answer

Heat energy

Answer

Mechanical energy

Question 28

Students in a lab group are asked to determine the identity of several substances based on the density of each substance. They measured the mass and volume of each substance and recorded it in the table below.

The group then calculated the density of each substance and compared it to the table of densities below.

Which unknown substance is most likely aluminum? (HINT: Do not pick the data chart as an answer.)

Accepted Answer

2

Answer

Answer

1

Answer

3

Question 29

Some students are testing the physical properties of a mineral.

Students observe the mineral to determine if it is metallic or non-metallic by looking at the quantity and quality of light reflected from the surface of the mineral. What physical property is being observed by the students?