WorksheetsESP Units 23-24 Review
Total questions: 25
Worksheet time: 16mins
Choose THREE examples of communication.
Eating
Writing a message
Speaking in Arabic to the teacher
Using face language
Sleeping
The ___________ between Riyadh and Dammam is about 400km.
weight
height
distance
network
Choose TWO answers.
Telecommunications is _____________________________.
communication using technology (eg mobile phones)
communication face to face
communication at distance
communication using your hands
What is this?
A signal
A device
A dish
Distance
Write ONE WORD ONLY.
This is a m (a) network.
Write ONE WORD ONLY.
This is an i (a) network.
A microphone ________________ a voice signal into an electrical signal.
increases
decreases
reflects
converts
Riyadh TV tower is an example of a __________________.
transmitter
receiver
fuse
battery
The transmitter converts an electrical signal into a _____________ signal.
electrical
voice
sound
radio
Transmission medium is the space between the transmitter and the _____________________.
receive
receiver
transmitter
Give THREE examples of transmission media.
Copper cable
A mobile phone
Fibre optic cable
The air (wireless)
A router
What is on top of the car?
A transmitter
A receiver
A fuse
A battery
A receiver converts a radio signal back into an ______________ signal and then to pictures and sound.
radio
electrical
voice
sound
What are these?
tools
electricity
devices
waves
Waves are __________________ that take energy from place to place.
actions
safety precautions
vibrations
tools
Frequency is the ______________ of waves produced every second.
height
weight
number
distance
Write ONE WORD ONLY.
Frequency is measured in (a) .
The wave (a) is the height of the wave from the rest position to the wave peak.
Write ONE WORD ONLY.
The wave (a) is the TOP of the wave.
What does this picture show?
Frequency
Wavelength
Wave amplitude
Wave peak
Wavelength is the _____________ between two wave peaks.
distance
height
weight
devices
The RED wave at the top is ____________________.
longer wavelength
shorter wavelength
The blue wave at the BOTTOM is ____________________.
longer wavelength
shorter wavelength
The wave at the TOP is __________________________.
low frequency
high frequency
The wave at the BOTTOM is __________________________.
low frequency
high frequency
