They were given the power of flight in the first of the new relaunched series in 2005- previously, their main problem was that they were confined to flat surfaces and couldn't climb stairs, which limited their activities (this was considered a joke by many!) However, in the early days of Dr.Who in the '60s, they COULD utilise special hover-platforms that they 'stood' on- flat saucer-like anti-gravity plates with railings around the front section.
The new series overcame this by equipping them with anti-gravity generators that enabled them to hover and move through the air.
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As revealed in Daleks in Manhatten/Eveloution of the Daleks, the Daleks are made out a metal called Dalekanium. The base of the dalek also provides a pickup for static electricity
The Daleks don't really have a personality have they have no emotions, actually just one! Beauty that is why they can never kill the doctor (Asylum of the daleks)
Fear and hate are the only emotions the daleks are capable of.
The daleks casing is made of polycarbite with a sheild. Cybermen are made of metal which isn't as strong.
Skaro