Worksheets3 rd Mid Reviewer in Science
Total questions: 92
Worksheet time: 46mins
What is speed?
It is the distance an object travels divided by the time it took an object to travel that distance.
It is the rate at which the object moves.
All of the above.
Speed depends on the distance traveled and the length of time.
True
False
What is the formula in getting the speed?
Speed = time/distance
Speed = distance/time
All of the above.
What is the unit for speed?
meter per second
mile per minute
kilometer per second
What is motion?
It is the distance an object travels divided by the time it took an object to travel that distance.
It is the rate at which the object moves.
It is the change in position in relation to a fixed object.
What do you call the objects that don’t move in relation to motion?
marks
reference point
starting line
What is velocity?
It is the speed of an object in a particular direction.
It is the speed with direction.
Both a and b.
When there is increase in acceleration of an object, there is also an increase in the force exerted.
True
False
Acceleration is dependent on the force applied and the mass of the object on which force is applied.
True
False
What is the unit of measuring time?
second
minute
hour
Using the formula, calculate the speed of an airplane traveling from Manila to Singapore travels 1,200 km in 3.2 hrs.
275 km/h
375 km/h
357 km/h
What is the speed of a ball that moves about 10 meters in 2 seconds?
20 m/s
50 m/s
5 m/s
Ysabel swims a distance from one end of a 50-m pool to the other end in 20 seconds. What is Ysabel's speed?
2.5 m/s
3.5 m/s
4.5 m/s
Name the different major directions.
north, south, east, west
northeast, northwest, southeast, southwest
north, southeast, east, southwest
Which of the following is an example of velocity?
20 km/h going to the North Expressway
50 kilometers per second
10 meters per second
It takes a fast swimmer about 25 seconds to complete a 50-meter freestyle. What is the speed of the swimmer?
2 m/s
25 m/s
75 m/s
Heat coming from the sun, the interior of the Earth, plants and animals, fossil fuels, and biofuels may be considered as ____________ of energy.
artificial sources
natural sources
Any man – made sources like machine and gadgets are classified as _______ of energy
artificial sources
natural sources
Heat is transferred through conduction, convection, and radiation.
True
False
It is a material that allows heat to travel through.
conductor
insulator
It is a material that does not allow heat to travel through.
conductor
insulator
White or light – colored objects and well – polished or shiny surfaces are good reflectors of heat.
True
False
A group of friends gather around a fire to stay warm
conduction
convection
radiation
The Gulf Stream is a current that brings warm ocean water from the south to the north.
conduction
convection
radiation
Walking on a warm sand with your bare feet.
conduction
convection
radiation
Drying your wet hair.
conduction
convection
radiation
The sun shines down on the family as they play on the beach.
conduction
convection
radiation
In some cultures, walking on fire is the ultimate sign of strength
conduction
convection
radiation
John accidentally grabbed the handle of the hot pot.
conduction
convection
radiation
Warm air rises and cold air sinks.
conduction
convection
radiation
Black or dark-colored objects absorb all the light coming from the sun or other sources of light.
true
fals
Matter that conduct heat is called an insulator.
true
false
Any kinds of metals are example of conductors.
true
false
Radiation is the transfer of heat in an open space.
true
false
Any man made sources like machines and gadgets are classified as natural source of energy
true
false
Conduction is the process of transferring heat in the presence of liquid.
true
false
Temperature tells how hot or cold an object is.
true
false
We can see all things around us by the reflection of light.
true
false
Reflection is the bouncing back of light when it strikes a surface.
true
false
It is called specular reflection when it strikes any rough surface
tru
false
The blocking of light of opaque materials creates shadow.
true
false
It is a diffuse reflection when light strikes a very smooth surface
true
false
If an object allows all light to pass through it then it is...
transparent
translucent
opaque
An object that blocks all light from passing through is...
transparent
translucent
opaque
This type of object lets some light through, but not all. It is not easy to see through this type of material.
transparent
translucent
opaque
What provides Earth with heat and light?
the sun
the moon
the planets
When light bounces off a mirror, it is _________.
absorbed
reflected
transmitted
What produces sound?
vibrations of molecules
heating of electricity
creating electrical signals
Which of the following is not a stringed instrument?
guitar
drum
violin
Which of the following will not affect the sound in a guitar?
length of the string
tightness of the spring
color of the string
How can you produce the sound of stringed instruments?
by blowing the string
by holding the string
by plucking the string
Which sound is pleasing to the ears of people?
choir singing at the churc
honking of the horns of cars
banging on the door
How does amplitude affect the loudness of sound?
The higher the amplitude, the lower is the sound.
The higher is the amplitude, the softer is the sound.
The higher is the amplitude, the louder is the sound.
Which of the following is the most important effect of sound on people?
Sound enables people to enjoy dancing to music.
Sound enables people to express their singing voice.
Sound enables people to communicate with one another.
The sound is produced by _________ of the molecules of solid, liquid, and gas.
flow
vibrations
reactions
The following are properties of sound waves that affects the differences in sound that people hear, EXCEPT one.
amplitude
frequency
vibrations
ultrasound
Most sounds that we hear in our surroundings travel to our ears through ______.
solid
liquid
air
plasma
it is the form of sound used in medicine and electronic equipment, __________.
amplitude
frequency
vibrations
ultrasound
Sound is important in the __________ of people. People cannot understand each other without sound.
health
livelihood
communication
It is simply the length of the wave
amplitude
wavelength
frequency
What is the unit of measurement to the loudness of the sound?
decibel
hertz
It is the height of the wave that tells the strength or power of a wave signal.
amplitude
wavelength
frequency
It tells us the number of waves that occurs per second.
amplitude
wavelengt
frequency
It helps us identify the pitch, the highness or lowness of a tone.
amplitude
wavelength
frequency
Materials may differ in their ability to transmit light.
True
False
The solar spectrum makes up the visible light on Earth.
True
False
The reflection of light enables us to see the things around us.
True
False
A diffuse reflection results when light strikes a very smooth surface.
True
False
When light strikes transparent objects, it may be reflected or absorbed.
True
False
A flower may look red when light absorbs only the red pigment of petals.
True
False
People use heat absorber clothing that are usually thick and light – colored.
True
False
Translucent materials allow all the visible light waves to pass through them.
True
False
A shadow is formed when the path of light is blocked by an opaque object.
True
False
Light scattered or diffused when it passes through frosted glass and cellophane.
True
False
copper wires
Conductor
Insulator
nail
Conductor
Insulator
rubber band
Conductor
Insulator
aluminum
Conductor
Insulator
paper
Conductor
Insulator
ceramic
Conductor
Insulator
steel
Conductor
Insulator
fabric
Conductor
Insulator
wood
Conductor
Insulator
silver
Conductor
Insulator
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
Opaque
Translucent
Transparent
