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WorksheetsFirst Quarter Science Review
Total questions: 49
Worksheet time: 25mins
The following are disadvantages of connecting too many bulbs in parallel EXCEPT:
Bulb will easily overheat.
There will be current overloading in the conducting wire.
It is difficult to maintain and install.
There will be equal amount of voltage for every load in a circuit.
What will happen if one light bulb is removed from a parallel circuit?
The other bulbs will not work.
The other bulbs will continue to light.
The other bulbs will get dimmer.
Some bulbs will get dimmer and some will get brighter
Which of the following is usually connected in series circuit?
Christmas lights
Appliances at home
Light bulbs at home
Headlight of motorcycle
What will happen if one light bulb is removed from a series circuit?
The other bulbs will not work.
The other bulbs will get brighter.
The other bulbs will get dimmer.
The battery will become stronger.
What is the SI unit of resistance?
Ampere
Ohm
Watt
Volt
It supplies energy in an electric circuit.
Load
Switch
Voltage source
Conducting wires
A water heater has a resistance of 22 Ω connected to a 220-V voltage source. What is the needed current to operate the heater?
5 A
7 A
8 A
10 A
It is the opposition to the flow of electric charges as they travel through a conducting wire.
Circuit
Resistance
Voltage
Electric current
It is the number of charges passing through a wire per unit time.
Voltage
Resistance
Power
Current
A laptop power charger has an output of 5.00 volts and has a resistance of 800 ohms. What is the current output of the charger?
6.25 mA
50.0 mA
75.0 mA
80.0 mA
It is a difference in electric potential energy in joule/coulomb.
Current
Circuit
Voltage
Resistance
What is the SI unit of voltage?
Ampere
Ohm
Volt
Watt
A motorcycle starter motor needs 40.0 A to operate with a resistance of 0.150 ohms. What is the needed voltage to start the motor?
5.00 V
6.00 V
7.00 V
8.00 V
It is a closed-loop through which current flows.
Circuit
Current
Resistance
Voltage
What is the SI unit of voltage?
Ampere
Ohm
Volt
Watt
When the temperature of substances changes, its molecular structure and movement also change, which results to__________.
Phase Change
Thermal Expansion
Heat Capacity
Specific Heat
What is commonly associated with coldness or hotness of a body?
temperature
boiling point
phase change
heat capacity
Which of the following is NOT a unit of temperature?
Calorie
Celsius
Fahrenheit
Kelvin
What is the temperature scale that Lord Kelvin introduced?
Fahrenheit
Celsius
Kelvin
Rankine
What happens to the temperature of an object when the particles are moving faster?
reduces
increases
remains constant
increases then reduces
Sound travels fastest through________.
liquid
gas
solid
none of the above
What is the quantity that compares the speed of light in a material to its speed in a vacuum?
refraction
index of refraction
reflection
rainbow
What is the transparent optical element with flat and polished surfaces that disperses light?
rainbow
prism
magnifying lens
optical lens
What is the bending of light when it travels from one medium to another?
refraction
reflection
rarefaction
dispersion
Doubling the net force acting on an object_______.
doubles its acceleration
decreases its acceleration
cuts its acceleration in half
does not affect its acceleration
An object is accelerating when it__________
speeds up
slows down
changes direction
all of the above
The ability to do work is called________.
Power
Energy
Work
Force
It is generally measured in Hertz.
Frequency
Energy
Prism
dispersion
What is the acronym used to remember visible light?
DOGFOUND
KTPERRY
ROYGBIV
ROMERO
Which property of light enables the formation of a rainbow?
I. Color separation II. Dispersion III. Reflection IV. refraction
I and III
II, III, IV
I, III, IV
I, II, III, IV
Among the following colors in a rainbow, which has the least energy?
Green
Red
Violet
Yellow
Which has the greatest energy among the colors in a rainbow?
Green
Orange
Red
Violet
Stored energy is also known as:
Potential Energy
Kinetic Energy
Thermal Energy
None of these
The energy of a moving object is called:
Kinetic Energy
Potential Energy
Thermal Energy
None of these
The work done can be calculated as:
W=Fd
W=F/d
W=d/F
W=fa
Which medium will sound energy travel fast?
air
metal
water
wood
A 20 kg bike accelerates at 9.8 m/s2. What was the force?
200 N
195 N
196 N
250 N
If a 10 kg object accelerates suddenly at 15 m/s2 how much force was applied to the object?
1.5 N
15 N
25 N
150 N
Going down a hill 12 kg sled has a force of 36 N. What is its acceleration.
1 m/s2
2 m/s2
3 m/s2
4 m/s2
What force must act on a 30 kg mass to give it an acceleration of 0.3 m/s2?
90 N
30.3 N
29.7 N
9 N
Force is a quantity that may cause an object to move, it is the product of an object’s mass and its acceleration. What is the correct representation of this statement?
F=m/a
F=a/m
F=ma
F=md
Which of the following statements about the Law of Inertia is NOT TRUE?
An object at rest will remain at rest.
An object in motion will remain in motion
A net force is needed to change the current state of an object
The object will move in the opposite direction of the applied force
The Laws of Motion served as a fundamental concept in the field of Forces, Motion and Energy. Who formulated these laws?
Aristotle
Galileo Galilei
Isaac Newton
Albert Einstein
If the net force is equal to zero, the force acting on an object is:
Balanced
Unbalanced
Gravitational
All of the above
Which of the following situations shows work done by a student?
Pushing 2 kg box at a distance of
2 m
Lifting 2 kg box at a distance of 2 m
Lifting 2 kg box in 1 minute
Setting a 2 kg box in 2 minutes
An _______ force must act on an object for it to change its motion.
Balanced
Unbalanced
Gravitational
Electrical
Suppose a ball of a mass 0.65 kg is hit with a force of 12 N. Its acceleration will be:
20 m/s2
18 m/s2
16 m/s2
10 m/s2
What is the unit of force?
Newton
m/s
m/s2
kg
What is defined as a push or pull exerted by one body on another body?
Force
Motion
Speed
Acceleration
