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WorksheetsLong Quiz Science 7 3rd Quarter
Total questions: 50
Worksheet time: 25mins
What do you call the change in position by using a reference point or origin?
Scalar
Vector
Motion
Distance
Which of the following is NOT an example of scalar quantity?
He weighs 75 pounds.
The heat index is 39 degrees.
He drives 25 m/s.
The provincial bus travel from San Jose to Manila with a speed of 50 Kph.
What is the speed of the motorcycle if the driver travels a distance of 15 meters in 15 second?
1m/s
15 m/s
225 m/s
0m/s
How far a cyclist travels 300 seconds in a straight line with a speed is 10 m/s?
3,000 m
300 m
3 m
30 m
Which of the following statement is NOT true?
The change in velocity can be achieved by increasing its speed while travelling in a straight line.
The change in velocity can be achieved by parking the car facing the exit gate.
The change in velocity can be achieved by decreasing its speed while travelling in a straight line.
The change in velocity can be achieved by changing its direction even while travelling at a constant
speed.
What do you call the kind of vibration objects in space and time have?
Wave
radiation
reflection
absorption
Which of the following is an example of mechanical wave?
Water Wave
Radio wave
Visible lights
gamma rays
What does a wave transmit?
Energy
Matter
Mass
People
Which of the following indicates the amount of energy a wave carries?
Frequency
Vibration
Amplitude
Velocity
What term refers to the number of waves passing a given point for a given time?
Wave speed
Frequency
Amplitude
Wavelength
If there is a tsunami, ocean waves may reach 20 m high. What does this height represents?
Frequency
Wavelength
Amplitude
Wave speed
What is the lowest point of a transverse wave called?
Crest
Trough
Compression
Rarefaction
In which waves do the particles of the medium vibrate parallel to the direction of motion of the waves?
Transverse waves
Longitudinal Waves
Surface Waves
Electromagnetic waves
What is the bouncing back of waves upon hitting a surface called?
Reflection
Diffraction
Refraction
Interference
Interference occurred when two or more waves meet, they interact with each other. What do you call the
overlapping of two crests?
Constructive
Destructive
Diffraction
Refraction
Through which of the following sound cannot travel?
Solid
Liquid
Gases
Empty space
What happens when a sound source passes by you?
Its velocity decreases
Its loudness increases.
Its pitch decreases.
Its frequency increases.
To which of the following is loudness closely related?
Pitch
Melody
Intensity
Quality
Which of the following is TRUE about an object that looks green?
It can be seen only in green light.
It reflects only green light.
It is colored green by nature.
It absorbs only green light.
Why are ultraviolet rays dangerous to living cells?
They require air to travel.
They can travel through empty space.
They have more energy than visible light.
They have less energy than radio waves.
Which of the following is a measure of the average kinetic energy of the particles of an object?
Heat
temperature
Specific heat
Thermal Energy
Which is equivalent to absolute zero temperature?
100 degree C
-273. 15 degree C
373 degree C
O degree C
Which process represents movement of heat from one particle to another?
Convection
Radiation
Conduction
Insulation
Which of the following is an excellent insulator of heat?
Copper
Silver
Tin
Air
Which of these does NOT require the presence of matter?
Convection
Radiation
Conduction
Insulation
Through which material can heat readily move?
Conductor
Radiator
Insulator
Convector
Which is NOT a mode of heat transfer?
Conduction
Convection
Insulation
Radiation
Which of the following is NOT a fluid?
Water
Ice
Steam
Water vapor
Which of the following statements is correct if two charges attract each other?
Both charges must be negative.
The charges are different.
Both charges must be positive.
The charges are the same.
What process involves connecting a circuit to the earth as a safety precaution?
Induction
Conduction
Grounding
Charging
When does a neutral object becomes positively charged?
When it loses electrons.
When it gains electrons.
When it loses protons.
When it gains protons.
What happens when two negative charges are brought close together?
They repel each other.
They attract each other.
They become grounded.
They neither attract nor repel to each other.
A plastic rod is rubbed with cotton and becomes negatively charged. Which statement correctly explain
this?
The plastic rod acquires extra protons from the cotton.
The plastic rod loses electrons during the charging process.
Protons are created as a result of the charging process.
The plastic rod gains electrons during the charging process.
What will happen when a negatively charged object touches a neutral object?
The electrons move to the neutral object making it negative.
The electrons stay to the neutral object making it negative.
The electrons move from the neutral object to the positive object and make it neutral object positive.
The electrons stay from the neutral object to the negative object and make it negative object.
What do you call the movement of electrons within a substance caused by a nearby charged object,
without direct contact?
Induction
Conduction
Contact
Insulation
People around a bonfire can feel the scorching heat of the flames. Which process is involved in the heat
transfer from the flames to the people?
Radiation
Conduction
Convection
Insulation
Which is TRUE about the law of reflection?
That the angle of incidence is always equal to the angle of reflection.
That the angle of incidence is more than the angle of reflection.
That the angle of incidence is equal to the angle of refraction.
That the angle of incidence, angle of refraction and normal lines meets in one plane.
Which of the following sounds is very painful to hear?
Cry of a baby
Normal conversation
Thunder
Library sound
What is the intensity of sound called?
Loudness
Pitch
Quality
Intensity
What will happen if the sound hits a hard surface?
It will be absorb.
It will be repeated.
It will reflects back to its source.
It will create diffraction.
When sound hits a silk cloth, what will happen to the sound?
It will be absorbed.
It will be repeated.
It will reflects back to its source.
It will create diffraction.
What do you call the repetition of sound by reflection?
Echo
Compression
Reverberation
Interference
The human eyes have 3 cone-shaped receptors that are sensitive to what colors?
Red, green and blue
Red, yellow and blue
Red, yellow and green
Blue, yellow and green
What will be the color produce when additive color red and blue are combined?
Magenta
Cyan
Yellow
Green
Convert 30 degree Celsius to Fahrenheit.
86 º
111.6º
60.4 º
14.2 º
Convert 18 degree Fahrenheit to Celsius.
-7.78 º
7.78 º
27.78º
-27.78º
Convert 5º C to kelvin.
278
268
1365
54.6
Convert 273K to Celsius.
0º
546º
1º
133.89º
What is the speed of sound during the day with cooler temperature?
Sound travels slower
Sound travel faster.
No change of speed.
Constant speed.
What is the speed of sound during the night with cooler temperature?
Sound travels slower
Sound travel faster.
No change of speed.
Constant speed.
