WorksheetsREVIEW IN SCIENCE 7 Q3
Total questions: 23
Worksheet time: 8mins
Which refers to the shortest distance between two positions of an object?
Displacement
Distance
Motion
Time
Which refers to the length of the entire path traveled by an object?
Displacement
Distance
Motion
Time
What time of wave needs a medium to propagate?
Electromagnetic waves
Microwaves
Mechanical waves
Ultraviolet
Which of the following waves occur when the individual particles or segment of a medium vibrate from side to side PERPENDICULAR to the direction in which the waves travel?
Electromagnetic
Mechanical
Longitudinal
Transverse
Which refers to the distance between any successive identical parts of the wave?
Amplitude
Frequency
Period
Wavelength
Which can be a medium for a wave?
Vacumm
Water
Space
Air
Which of the following is NOT capable of transporting sound?
Air
Vacumm
Water
Ice
Humans can only sense within the frequency range about 20 Hz- 20000 Hz. This is call
Infrasonic
Ultrasonic
Audible
None of these
The following are electromagnetic waves. EXCEPT
Infrared
Gamma rays
Sound
X-rays
Which electromagnetic wave is used in a microscope
Visible light
Ultraviolet light
Infrared radiation
Gamma rays
Which of the following terms best describes an object the emit energy in the form of light?
Flourenscence
Incandescence
Luminous
Phophorescence
Which forms of energy enable us to see the beauty of our nature and appreciate the colours of objects through our eyes
Chemical
Heat
Light
Sound
Which of the following colours will result if the primary colours of light will be mixed
black
White
pink
yellow
What colour of the visible spectrum has the highest energy?
red
orange
green
violet
When you touch a piece of ice with your finger, energy flows
From your finger to the ice
From the ice to the finger
Both ways
Energy does not flow
What will happen when two like charges are brought together? They will _______
Repel each other
Attract each other
Neutralize each other
Have no effect on each other
Which of the following is a conductor?
wood
Rubber
Hair
Copper
Two unlike charges
Attract each other
Repel each other
Neutralize each other
Have no effect on each other
The following are correctly matched, EXCEPT
Speed-Scalar
Velocity-Vector
Distance -Scalar
Displacement-Scalar
The following units can be used to mathematically express speed, EXCEPT
m
m/s
km/hr
miles/hr
What do we call the vibration that propagates as an acoustic wave through a transmission medium such as gas, liquid and solid?
Song
Sound
Chord
Zone
How does heat travel through the pan. Heat travels through the pan by _____.
radiation
dispersion
convection
Conduction
A car travels 150 km within 2 hrs. Find the speed of the car
300 km/hr
150 km/hr
300 m/s
150 m/s
