The power of Uranium

A Hydrogen Bomb

For an Example

Hydrogen Bombs
A Thermonuclear or hydrogen bomb uses a normal bomb as a trigger, to create enough heat to start the the process of a fusion reaction. A fusion reaction uses deuterium and trltlum as fuel, and because of the plentifulness of this fuel. The first hydrogen bomb to be detonated was released on a small island in the pacific ocean in 1952. The bomb that detonated was 500 times more power full than the one dropped upon Hiroshima; it produced a 5km wide fireball that vaporized the entire island leaving a 1.5km wide, and a 60m deep crater!
"Ivey Mike". Detonated Nov 1, 1952 on the Ewnewetak Atoll
"Ivey Mike". Detonated Nov 1, 1952 on the Ewnewetak Atoll
At the center of a thermonuclear bomb, there is a normal atomic bomb, surrounding that is a layer of of lithium deuteride. Around that is a tamper, a thick outer layer of fissionable material, that combined the contents together to obtain a lager explosion than just a atom bomb. Neutrons from the atomic bomb exploding cause the lithium to fission into helium, tritium and energy. The atomic explosion also creates the temperatures needed for the subsequent fusion of deuterium with tritium, (5,000,000°K and 40,000,000°K, respectively).
Enough neutrons are made in the fusion reactions to produce further fission into the core and to initiate fission in the tamper. Although one event must follow the other for the weapon to work, they happen so fast that they seem to be a single event, an explosion of insane magnitude.
external image 220px-Teller-Ulam_device_3D.svg.png
This design is considered the Teller Ulam Device; named after its creators Edward Teller and Stanislaw Ulam. The two scientists created the device in 1951 for the united states during the Cold War's "Arms Race". It is not a good idea to underestimate an object that has the possibility of this much destruction.