117378
Descripción
Test por Joe Waymouth, actualizado hace más de 1 año
|
Creado por Joe Waymouth
hace más de 11 años
|
|
Pregunta 1
Pregunta
What type of matirial can become staticly charged?
Respuesta
-
An insulator
-
A non conducter
-
A conductor
-
A non insulator
-
An insulator or conductor
Pregunta 2
Pregunta
What is transferred from one object to another when one becomes static?
Respuesta
-
Protons
-
Neutrons
-
Electons
-
Protons, Neutrons and electrons
Pregunta 3
Pregunta
What charge are electrons?
Respuesta
-
Positive
-
Negitive
-
Neutral
Pregunta 4
Pregunta
How can you discharge static electricity?
Respuesta
-
Earthing it
-
Grounding it
-
Flooring it
Pregunta 5
Pregunta
Two objects with the same charge will...
Respuesta
-
repel each other
-
attract each other
Pregunta 6
Pregunta
The atoms or molecules that become charged are called...
Respuesta
-
ions
-
opposites
-
static
Pregunta 7
Pregunta
Why is a plane earthed when it is refuelled?
Respuesta
-
So the static electricity does not spark near the flammable liquid
-
So it doesn't blow away
-
So the static electricity cant shock anyone in the plane
Pregunta 8
Pregunta
What is resistance measured in?
Respuesta
-
ohms
-
ounces
-
volts
Pregunta 9
Pregunta
How do you work out resistance?
Respuesta
-
Voltage / Current
-
Current / Voltage
-
Current * Voltage
-
Current / Amps
Pregunta 10
Pregunta
What colour is the live wire?
Respuesta
-
Blue
-
Brown
-
Yellow and green
Pregunta 11
Pregunta
What colour is the neutral wire?
Respuesta
-
Blue
-
Brown
-
Yellow and green
Pregunta 12
Pregunta
What colour is the earth wire?
Respuesta
-
Blue
-
Brown
-
Yellow and green
Pregunta 13
Pregunta
Why do electrical devices have fuses?
Respuesta
-
So the device is protected from a power surge
-
So the device doesn't work too hard
-
So you can turn the device off easly
Pregunta 14
Pregunta
Why do metal devices have earth wires?
Respuesta
-
So that if there is an electrical fault and the outer casing becomes charged it will earth through the earth wire and not through someone touching it
-
To get power
-
To make the fuse work
Pregunta 15
Pregunta
What is the symbol for a double insulated device?
Respuesta
-
A square inside another square
-
A triangle inside another triangle
-
A circle inside another circle
-
A hexagon inside another hexagon
Pregunta 16
Pregunta
Ultrasound has a frequency of more than how many hertz?
Respuesta
-
20000
-
10000
-
15000
Pregunta 17
Pregunta
which type of nuclear radiation is a wave?
Respuesta
-
Alpha
-
Beta
-
Gamma
Pregunta 18
Pregunta
An atom that has lost an electron has a ______ charge?
Respuesta
-
positive
-
neutral
-
negative
Pregunta 19
Pregunta
What is half life?
Respuesta
-
The time it takes for a radioactive source to decay
-
The time it takes for half a radioactive source to decay
-
Half the time a radioactive source takes to kill someone
Pregunta 20
Pregunta
What material will stop gamma radiation?
Respuesta
-
Paper
-
Aliminium
-
Lead
Pregunta 21
Pregunta
Which one of these is a way of using gamma in hospitals?
Respuesta
-
To sterilise objects
-
To remove a kidney stone
-
To scan an unborn baby
Pregunta 22
Pregunta
Splitting an atom is...
Respuesta
-
Fussion
-
Fission
-
Fession
Pregunta 23
Pregunta
How does radioactivity change over time?
Respuesta
-
It increases
-
It decreases
-
It stays the same
¿Quieres crear tus propios Tests gratis con GoConqr? Más información.