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WorksheetsSuperconductors
Total questions: 13
Worksheet time: 7mins
A superconductor is a
material that conducts electricity more easily than others
material that conducts electricity more difficultly than others
material that doesn't conduct electricity at all
We are trying to find a superconductor that has
a lot of resistance
no resistance at all
While we deliver electric power on the grid we lose
15% of current
5% of speed
5% of energy
25% of energy
What does the word grid mean?
Griglia
Grata
Rete di distribuzione
Fili della corrente
What does the word "maglev" come from?
magic levitation
magnetic level
magic level
magnetic levitation
Which superconductor was discovered in 1911?
mercury
porcelain
ceramic
coil
Which was the problem with mercury?
It needs to be cooled to -145°C
It breaks easily
It is brittle
It needs to be cooled to -269°C
Which superconductor was discovered in 1986?
mercury
porcelain
ceramic
coil
Which was the problem with ceramic?
It needs to be cooled to -145°C
It is brittle
It breaks easily
It needs to be cooled to -269°C
Why is the cooling process a problem?
Because it is expensive
Because it is difficult
Because it is impossible
Because it is cheap
When there has been a revival of ceramic?
1960
2000
2010
1980
Which was the the solution to make ceramic flexible?
adding rubber
adding glass
adding thin filaments of it inside a ribbon of metal
adding thin filaments of porcelain inside a ribbon of metal
Which the next goal?
to find a superconductor that can operate at room-temperature
to find a superconductor that can operate at -145°C
to find a superconductor that can operate at +145°C
to find a superconductor that is flexible
