EOC PHYSICAL SCIENCE EXAM REVISION. SAMPLE EXAM
REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
A student opens the top window and the bottom window in a hot room. Warmer air goes out the
top window, while cooler air comes in the bottom window. Which best explains why the room
becomes cooler? - ANSWER- convection
Which diagram represents a wave with the most energy? - ANSWER-
Which figure represents the wave with highest frequency and lowest energy? - ANSWER-
When comparing the types of electromagnetic waves, which has the greatest energy? - ANSWER-
gamma rays
A student is listening to the radio and realizes that the volume is too low. When she turns up the
volume, which part of the sound waves is she changing? - ANSWER- amplitude
What is the speed of a wave with a wavelength of 0.5 m and a frequency of 20 Hz? - ANSWER-
10 m/s
When a plastic rod is rubbed with fur, the plastic rod becomes negatively charged. Which statement
explains the charge transfer between the plastic rod and the fur? - ANSWER- Electrons are
transferred from the fur to the plastic rod.
How do electrically charged objects affect neutral objects when they come
in contact? - ANSWER- Electrons move from negatively
, charged objects to neutral objects.
The drawing shows two uncharged lightweight plastic balls suspended by thin, insulating threads.
Ball 1 is given a positive charge. Ball 2 is given an equivalent negative charge.
Which diagram best shows how the balls will react after becoming charged? - ANSWER-
a negatively charged balloon. When the charged balloon is brought near some pieces of paper, the
papers are attracted to the balloon.
Which describes the charging of the pieces of paper? - ANSWER- positive, due to induction
A series circuit has a 6-V battery and 3 ohms of resistance. How much current will flow through
the circuit? - ANSWER- 2A
What voltage is required to run a 45-watt light bulb if the current is 0.5 amphere? - ANSWER-
90 volts
How much current is used by a 120-V refrigerator that uses 650 W of power? - ANSWER- 5.4
A
Which best describes a circuit in series? - ANSWER- Electrons have only one path at all times.
Which statement is true about parallel circuits? - ANSWER- They contain separate branches
through which current can flow.
Which is the correct diagram for a parallel circuit with three light bulbs powered by a 24-V battery?
- ANSWER-
A motor has a current of 2 A flowing through it when it is powered with a 12-V battery.
REVISION PRACTICE QUESTIONS WITH CORRECT
ANSWERS (2024 UPDATE)
A student opens the top window and the bottom window in a hot room. Warmer air goes out the
top window, while cooler air comes in the bottom window. Which best explains why the room
becomes cooler? - ANSWER- convection
Which diagram represents a wave with the most energy? - ANSWER-
Which figure represents the wave with highest frequency and lowest energy? - ANSWER-
When comparing the types of electromagnetic waves, which has the greatest energy? - ANSWER-
gamma rays
A student is listening to the radio and realizes that the volume is too low. When she turns up the
volume, which part of the sound waves is she changing? - ANSWER- amplitude
What is the speed of a wave with a wavelength of 0.5 m and a frequency of 20 Hz? - ANSWER-
10 m/s
When a plastic rod is rubbed with fur, the plastic rod becomes negatively charged. Which statement
explains the charge transfer between the plastic rod and the fur? - ANSWER- Electrons are
transferred from the fur to the plastic rod.
How do electrically charged objects affect neutral objects when they come
in contact? - ANSWER- Electrons move from negatively
, charged objects to neutral objects.
The drawing shows two uncharged lightweight plastic balls suspended by thin, insulating threads.
Ball 1 is given a positive charge. Ball 2 is given an equivalent negative charge.
Which diagram best shows how the balls will react after becoming charged? - ANSWER-
a negatively charged balloon. When the charged balloon is brought near some pieces of paper, the
papers are attracted to the balloon.
Which describes the charging of the pieces of paper? - ANSWER- positive, due to induction
A series circuit has a 6-V battery and 3 ohms of resistance. How much current will flow through
the circuit? - ANSWER- 2A
What voltage is required to run a 45-watt light bulb if the current is 0.5 amphere? - ANSWER-
90 volts
How much current is used by a 120-V refrigerator that uses 650 W of power? - ANSWER- 5.4
A
Which best describes a circuit in series? - ANSWER- Electrons have only one path at all times.
Which statement is true about parallel circuits? - ANSWER- They contain separate branches
through which current can flow.
Which is the correct diagram for a parallel circuit with three light bulbs powered by a 24-V battery?
- ANSWER-
A motor has a current of 2 A flowing through it when it is powered with a 12-V battery.
