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# exploring space ch.13 - PowerPoint PPT Presentation

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Chapter. 13

4.Sections

4.Sections

BY: Kellie Little

BY: Kellie Little

The Science Of Rockets Section. .1 Part..1

Section. .1 Part..1

A rocket is a device that expels gas in one

direction to move on the opposite direction.

Rocket technology originated in China

to other parts of the world. Rockets were

developed for military use as well as for

fireworks.The first rocket was made in China

in the 1100's. These rockets were very

simple, they were arrows coated with a

flammable powder that was lighted and

shot with bows.

Section.1 Part.2

The main advantage of a rocket is that the

The main advantage of a rocket is that the

total weight of the rocket is greatly reduced

total weight of the rocket is greatly reduced

as the rocket rises. The greater the thrust,

as the rocket rises. The greater the thrust,

the greater the velocity of the rocket. The

the greater the velocity of the rocket. The

force of gas propelled out of the back of the

force of gas propelled out of the back of the

rocket , this produces an opposing force that

rocket , this produces an opposing force that

propels the rocket forward.

propels the rocket forward.

The Space Program Section.2 part.1

The space race began in 1957

when the soviets launched the

satellite Sputnik into orbit. The

United States responded by

speeding up its own space program.

A satellite is an object that

revolves around another object in

space.

Section.2 Part.2

The first living creature sent

into space was a dog names

Laika. She orbited earth aboard

the soviet spacecraft Sputnik 11,

in November 1957. In 1961 the

space race heated up even

more when Soviets launched

the first human into space.

Section.3 Part.1

BIG TEXT

NASA has used space

shuttles to perform many

include taking satellites into

orbit, repairing damaged

satellites, and carrying

astronauts and equipment to

and from space stations.

Section.2 Part.2

A space station is a large

artificial satellite on which

people can live and work for

long periods of time. A space

station provides a place where

long-term observations and

experiments can be carried out

in space.

Using space Science on Earth Section.4 Part.1

Conditions in space that differ

from those on Earth include near

vacuum, extreme temperatures,

and microgravity. Astronauts in

orbit experience a feeling of

weightlessness, or microgravity.

And a vacuum is a place that is

empty of all matter.

Section.2 Part.2

The space program has developed

thousands of products that affect

many aspects of modern society,

including consumer products, new

materials, medical devices, and

communications satellites. Satellites

are used for communications and for

collecting weather data, and other

scientific data.

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