Unit 4 vocabulary/ page 44

L.1/ What caused

the explosion?

1F. Dwaikat

U. 4/ L. 1 vocabulary

incident: a definite and separate occurrence /an event

space shuttle: a spacecraft winged orbiter: a spacecraft, having wings, that

orbits a planet or moon without landing on it

cargo: goods carried by a ship, aircraft, or other vehicle; freight

crew: a group of people working together tank: a large container that provides fuel

2F. Dwaikat

propellant:   a rocket fuel that propels or provides thrust.

boosters : a device for increasing power or effectiveness.

launch: to set or thrust a craft in motion O-ring: a rubber ring used in machinery as a

seal; A flat ring made of rubber or plastic vital: essential; very important

U. 4/ L. 1 vocabulary

3F. Dwaikat

by-product: a secondary result; a side effect. something produced in the process of making something else.e.g: When plants produce carbohydrates by photosynthesis, oxygen is released as a by-product.

brittle: easily damaged premature: occurring before the normal or expected

time SRBs: Solid Rocket Boosters

U. 4/ L. 1 vocabulary

4F. Dwaikat

SRBsSolid

Rocket Boosters

external fuel tank

winged orbiter

5F. Dwaikat

NASA Image of the final Solid Rocket Booster (right) being mated to a Delta II rocket (blue). Two boosters (white) can be seen already attached.

Solid Rocket Boosters (SRBs) (or Motors, SRMs) are used to provide thrust in spacecraft launches from the launch-pad up to burnout of the SRBs

6F. Dwaikat

A Space Shuttle External Tank (ET) on its way to the Vehicle Assembly Building.

7F. Dwaikat

orbiter: something that orbits, especially a spacecraft that orbits a planet or moon without landing on it. It carries the crew & the cargo. 8F. Dwaikat

The Challenger’s crew9F. Dwaikat

O-ring seal; joint10F. Dwaikat

Space Shuttle Columbia launching11F. Dwaikat

The Challenger’s explosion12F. Dwaikat