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Rockets

David White

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Across
1.generic name for certain synthetic or semisynthetic materials that can be molded or extruded into objects or films or filaments or used for making e.g. coatings and adhesives
4.edge tool used as a cutting instrument
6.a reverse movement
9.a clamp for holding pipe that is to be cut or threaded
15.liquid fuel engines that give more power to the space shuttle
17.natural height of a person or animal in an upright position
20.Low orbit earth, hard to maintain contact
23.set up to bring rocket development under one division
26.make tight
27.for every action there is an equal and opposite reaction
28.a power tool for cutting wood
29.the space between two lines or planes that intersect
30.something that provides or causes propulsion, such as the explosive charge in a gun or the fuel in a rocket
31.speed and direction a rocket must have to orbit the earth
33.fixes everything
34.developed V-2 rocket during World War II
36.the force generated by a rocket engine that propels the rocket
37.a flight made to observe the performance characteristics of a new aircraft or spacecraft.
38.a small hard ball used in playing golf
41.the region of the upper atmosphere extending upward from the tropopause to about 30 miles (50 km) above the earth
42.air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure
44.(often followed by 'of') a large number or amount or extent
45.how fast an object is moving in a specific direction
46.is the downward force applied to all objects on earth
47.the force applied to a unit area of surface
48.the extent of something from side to side
Down
2.where fuel is burned
3.an increase in speed
5.surface resistance to relative motion
7.the amount of 3-dimensional space occupied by an object
8.cement consisting of a sticky substance that is used as an adhesive
10.gas that exits through the nozzle and make the rocket move forward
11.didn't build rockets but inspired others to
12.a system of units used to express the weight of something
13.engines that allow the shuttle to move around in space
14.effects of such motion on bodies
16.brought to and maintained at an atmospheric pressure higher than that of the surroundings
18.change from one position
19.anything that determines or serves as a pattern
21.a mixture of fuel and oxidizer
22.speed and direction a rocket must have to completely break free of a planet's gravitational pull
24.controls the shuttles flight path until there is enough dense atmosphere enough to use the rudder and elevators
25.the fins need to be equal distance apart
28.a rocket fuel that is a solid rather than a liquid or a gas
32.A serious piece of equipment used for speeding up the drying process.
35.where the exhaust escapes from the rocket
39.substance that combines with the fuel in a rocket engine
40.tested rockets
41.how fast an object is going
43.a fluid necessary for the life of most animals and plants

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