PHYSICAL SCIENCE END SEMESTER FULL EXAM REVISION
QUESTIONS. ALL EXAM REVISION QUESTIONS AND
CORRECT ANSWERS (ALREADY GRADED A+) (2024 UPDATE)
Laura wonders why an object can ever accelerate if every force it exerts causes a reaction force.
Which explanation best answers her question? - ANSWER- D.
The forces are not exerted on the same object, so they are not balanced forces.
What is the mass of a crate if a force of 200 N causes it to accelerate at 8 m/s2? (Formula: F=ma)
- ANSWER- A.
25 kg
A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1
m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling
ball? - ANSWER- B.
15.0 N
A skydiver falls toward the ground at a constant velocity. Which statement best applies Newton's
laws of motion to explain the skydiver's motion? - ANSWER- A.
An upward force balances the downward force of gravity on the skydiver.
A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25 m/s2? (Formula:
F=ma) - ANSWER- A.
3.5 N
,Ana exerts a force of 20 N on a volleyball that has a mass of 0.15 kg. What is the force that the
volleyball exerts on Ana? - ANSWER- 20 N
Newton's first law of motion was a giant leap forward in scientific thought during Newton's time.
Even today, the idea is sometimes difficult at first for people to understand.
Which statement is the best example of an object and motion that would make it hard for people
to believe Newton's first law? - ANSWER- A.
A rolling ball eventually slows down and comes to a stop.
Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. The
balloon then flies around the room.
Which statement describes how this example is an application of Newton's laws of motion? -
ANSWER- B.
The type of chemical bond that involves the transfer of electrons between atoms is a(n) ______ -
ANSWER- ionic
What symbol would best represent an electric fan in an electric circuit? - ANSWER- C.
What is the main disadvantage of parallel circuits? - ANSWER- NOT C, A
Roshan describes the basic parts of an electric circuit using a shower as a model. Which part of a
circuit does the water pipe represent? - ANSWER- A.
the wire
,When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in
this circuit? - ANSWER- D.
The electric charges move from the energy source through the buzzer and back to the energy
source.
Which device manages the flow of current in an electric circuit? - ANSWER- NOT A,C
What label should Patty place in the marked cell? - ANSWER- C.
Resistor
What is an advantage of series circuits? - ANSWER- NOT D.
Light bulbs get dimmer as more bulbs are added.
What label should Mateo place in the marked cell? - ANSWER- B.
Provides electrical energy
Which device provides electrical energy to run an electric circuit? - ANSWER- C.
the battery
Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could
Chang leave out and still light up the bulb? - ANSWER- NOT C.
the wire
How does a parallel circuit change when a branch is added? - ANSWER- B.
The total resistance decreases, so the current in the circuit increases.
, Which best describes Earth's magnetic field lines? - ANSWER- not c.
The field lines go out of Earth in northern Canada, enter Earth near Antarctica, and are aligned
with the geographic poles.
An object that is made of which material is likely to be attracted to a magnet? - ANSWER- B.
nickel
Jill uses a magnet to pick up a nail. Then, she touches the nail to a paper clip and picks up the
paper clip. What will most likely happen when she pulls the magnet away from the nail? -
ANSWER- C.
The paper clip will fall off of the nail because the nail was only a temporary magnet.
What is the best way to arrange the magnets on the train and on the track so that the model train
levitates? - ANSWER- B.
flat, so that the north pole of the magnets on the train point up and the north poles of the magnets
on the track point down
How are the magnetic field lines near the south pole of a magnet affected when a second south
pole is brought near it? - ANSWER- NOT B, C
What error did Laticia make? - ANSWER- NOT C.
The arrows to the left of Earth should point down.
Which element is magnetic? - ANSWER- D.
Which statement correctly describes whether a compound is a pure substance? - ANSWER- B.
QUESTIONS. ALL EXAM REVISION QUESTIONS AND
CORRECT ANSWERS (ALREADY GRADED A+) (2024 UPDATE)
Laura wonders why an object can ever accelerate if every force it exerts causes a reaction force.
Which explanation best answers her question? - ANSWER- D.
The forces are not exerted on the same object, so they are not balanced forces.
What is the mass of a crate if a force of 200 N causes it to accelerate at 8 m/s2? (Formula: F=ma)
- ANSWER- A.
25 kg
A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1
m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling
ball? - ANSWER- B.
15.0 N
A skydiver falls toward the ground at a constant velocity. Which statement best applies Newton's
laws of motion to explain the skydiver's motion? - ANSWER- A.
An upward force balances the downward force of gravity on the skydiver.
A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25 m/s2? (Formula:
F=ma) - ANSWER- A.
3.5 N
,Ana exerts a force of 20 N on a volleyball that has a mass of 0.15 kg. What is the force that the
volleyball exerts on Ana? - ANSWER- 20 N
Newton's first law of motion was a giant leap forward in scientific thought during Newton's time.
Even today, the idea is sometimes difficult at first for people to understand.
Which statement is the best example of an object and motion that would make it hard for people
to believe Newton's first law? - ANSWER- A.
A rolling ball eventually slows down and comes to a stop.
Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. The
balloon then flies around the room.
Which statement describes how this example is an application of Newton's laws of motion? -
ANSWER- B.
The type of chemical bond that involves the transfer of electrons between atoms is a(n) ______ -
ANSWER- ionic
What symbol would best represent an electric fan in an electric circuit? - ANSWER- C.
What is the main disadvantage of parallel circuits? - ANSWER- NOT C, A
Roshan describes the basic parts of an electric circuit using a shower as a model. Which part of a
circuit does the water pipe represent? - ANSWER- A.
the wire
,When an electric circuit operates, a buzzer makes a sound. What happens to the electric charges in
this circuit? - ANSWER- D.
The electric charges move from the energy source through the buzzer and back to the energy
source.
Which device manages the flow of current in an electric circuit? - ANSWER- NOT A,C
What label should Patty place in the marked cell? - ANSWER- C.
Resistor
What is an advantage of series circuits? - ANSWER- NOT D.
Light bulbs get dimmer as more bulbs are added.
What label should Mateo place in the marked cell? - ANSWER- B.
Provides electrical energy
Which device provides electrical energy to run an electric circuit? - ANSWER- C.
the battery
Chang wants to build a circuit that will light up the bulb from a flashlight. Which component could
Chang leave out and still light up the bulb? - ANSWER- NOT C.
the wire
How does a parallel circuit change when a branch is added? - ANSWER- B.
The total resistance decreases, so the current in the circuit increases.
, Which best describes Earth's magnetic field lines? - ANSWER- not c.
The field lines go out of Earth in northern Canada, enter Earth near Antarctica, and are aligned
with the geographic poles.
An object that is made of which material is likely to be attracted to a magnet? - ANSWER- B.
nickel
Jill uses a magnet to pick up a nail. Then, she touches the nail to a paper clip and picks up the
paper clip. What will most likely happen when she pulls the magnet away from the nail? -
ANSWER- C.
The paper clip will fall off of the nail because the nail was only a temporary magnet.
What is the best way to arrange the magnets on the train and on the track so that the model train
levitates? - ANSWER- B.
flat, so that the north pole of the magnets on the train point up and the north poles of the magnets
on the track point down
How are the magnetic field lines near the south pole of a magnet affected when a second south
pole is brought near it? - ANSWER- NOT B, C
What error did Laticia make? - ANSWER- NOT C.
The arrows to the left of Earth should point down.
Which element is magnetic? - ANSWER- D.
Which statement correctly describes whether a compound is a pure substance? - ANSWER- B.
