Yes and no... Pretty much every glider does not have an engine. A tow plane is used to take the glider up, then it detaches and uses thermals which come from the ground to lift its self up. Just like what a bird does. When a bird flies in circles, it has found a thermal and you will notice it is rising up... On the other hand, Germany has invented a glider with an engine that comes out for take off, and as soon as the glider is in the air, the engine goes back in.
No, that's what makes them gliders.
Gliders and hot air balloons have no engines. (also paper darts, if you count them!)Gliders
Airplanes have engines, gliders don't and must be towed up in the air in order to fly by a tow plane.
Only gliders soar like eagles, other aircraft have engines.
Nope. they use a tow plane to get airborne and then ride the air currents to stay aloft.
They used gliders due to the fact that engines are hard to make/power. Also aluminum(useful due to weight to strength ratio) was very rare. Gliders also laid the framework to useful powered aircraft designs.
yes Most airplanes other then gliders need fuel to fly some planes run on normal internal combustion engines and others run on jet engines but they all require fuel to operate them.
All gliders are airplanes, but not all airplanes are gliders.
No, sugar gliders do not have jobs.
No, sugar gliders are not racist.
what instincts do sugar gliders born with
Hand gliders do not exist - just bad grammar for hang glider.