1
is a rapid flow of snow down a sloping surface
2
s a subjective feeling of tiredness
3
is a person who travels in a vehicle
4
a quality of an aircraft which enables it to remain in controlled flight
5
is a machine that is able to fly by gaining support from the air
6
is a large landform that stretches above the surrounding land in a limited area, usually in the form of a peak.
7
is a commitment by someone to do or not do something
8
is the state of the atmosphere, to the degree that it is hot or cold
9
s a point on a surface that is higher in elevation
10
is a low area between hills
11
is a small river
12
comprises responsive operations that usually involve the saving of life
13
an impact between two or more moving objects
14
is a geological feature consisting of a chain of mountains or hills that form a continuous elevated crest for some distance
15
s a body or a class of people who work at a common activity
