Worksheetsscience quiz:physics
Total questions: 45
Worksheet time: 47mins
This diagram show how sound waves move.label the diagram.
The glass in the picture is breaking due to the sound.which type of vibration is produced to make it break
low pitch
high pitch
human voice
echo
Sound waves travel the FASTEST through _____________.
Gases
Liquids
Solids
An object that does not vibrate cannot produce
Sound
Light
Heat
Electricity
A place where no sound exists is...
vacum
vaccum
vacuum
If you want to change the pitch of a sound, you have to change the ___
speed
amplitude
volume
frequency
Bats use ________ to locate mosquitoes in the air
solar
ecology
echolocation
refraction
What unit is the intensity of sound measured in?
decibels (dB)
Hertz (Hz)
meters per second (m/s)
meters
what is the speed of sound in air?
speed of sound in water
speed of sound in solid(in m/s)
Which material allows sound to travel the fastest?
Steel
Water
Wood
Air
the substance that the sound wave moves through is called the _______
Where is the perfect spot for echo to get produced
A room filled with furniture
An empty and big room
The Dining hall
Kitchen
Chloe and her father have gone fishing. Her father sends out a sonar.Chloe is puzzled about this.
Why does Chloe's father do this?
just like that
To attract fish
To repel sharks and call fish
So that the sound bounces off the fishes and they know where it is.
Tommy wants to see whether sound travels in space. what sensible experiment can he use to find out?
why?
He can use the bell jar experiment because if the air is pumped out of the jar, you can see the bell vibrating but you cannot hear the sound
he should go to space and see if he can hear anything
Tommy can use a telescope to test if sound travels in space.
He could use a stethoscope and put it in a vacuum chamber.Then he can see if he can hear the sound
Why do we see lightning before we hear the thunder?
Our eyes trick us.
Light travels faster than sound.
they're two separate things.
A battery or other device which provides energy for a circuit
In which condition the circuit is?
Series circuit
Incomplete circuit
Parallel circuit
Power source
Why does the following circuit not work?
The light bulb is broken
The switch is closed
The wood block is an insulator
The battery is dead
why an ammeter cannot be connected to a parallel circuit
Connecting an ammeter in parallel is not possible as it will sense low and inaccurate current.
what is the SI unit of current?(full form)
Volt
Ohm
Ampere
Joule
insulators ______electron flow
Which of the following could be used to complete a circuit?
Cloth
Cardboard
Rubber Band
Penny
Why do electricians always wrap wires in plastic?
Plastic comes in many different colors
Plastic is a good electrical conductor
Plastic makes the wires easy to bend
Plastic is a good electrical insulator
The student conducted an experiment with circuits. Why was the bulb bright when he closed the switch?
The switch produced an electric current
Closing the switch broke the circuit
Closing the switch completed the circuit
The switch did not make a difference
Cell is a device which-
Converts chemical energy into electrical energy.
Electrical energy into light energy
Electrical energy into magnetic energy
None of these
Would the bulb glow in the given circuit?
Yes
No
Switch is also referred as _____ in an electric circuit.
filament
cell
key
Which of these appliances NOT run on electricity ?
cooker
fridge
TV
An electric cell has ____ terminals.
1
2
3
which is a better conductor? Silver or aluminium
aluminium
which circuit has more current?
(ignore the open switch)
A
B
Give two examples of unuseful echoes.
electrons in a metal flow______
freely
in a straight order
attractively
electrons are ________charged
electrons are ________charged
MEGA HARD QUESTION #LEVEL 1🔥
Xoro clapped his hands near a tall cliff. he was 30 metres away from the cliff. The speed of sound in the air is 340 m/s. Calculate the time when he will hear the echo. Show all your working.
MEGA HARD QUESTION #LEVEL 2🔥🔥
what component can be used to connect materials temporarily in a circuit
(a)
MEGA HARD QUESTION #LEVEL3 🔥🔥🔥(99% FAIL)
How does a light bulb produce light?
