Space Exploration (2) - ISSJunior Science

Learning Objectives

• Have a high level understanding of the International Space Station (ISS)

• Examine some of the effects of Space on the Human Body

• Describe the benefits of human activity in space

ES08 examine some of the current hazards and benefits of space exploration and discuss the future role and implications of space exploration in society

PW04 research and discuss a technological application of physics in terms of scientific, societal and environmental impact

Lift-Off

The escape velocity of Earth is the

speed at which a free object must travel to escape into space from a

planet’s gravitational pull..

Earth’s escape velocity is 11.186 km/s.

There are two main types of fuel used in Rockets - solid and liquid.

Solid fuel rockets are simple and reliable, once ignited there’s no stopping them, but

can’t be throttled to control thrust.

Liquid fuel rockets provide less raw thrust, but can be controlled, allowing astronauts to regulate the speed of a rocket, and adjust the

propellant valves to turn the rocket off and on. Examples of liquid fuel include liquid

oxygen (LOX) and liquid hydrogen.

Until its retirement in 2011 the shuttle ran 133 mission

which helped to build the ISS and served as the main form

of transport for astronauts and ISS supplies.

Living in Space….International Space Station (ISS)

1998 - Launched into spaces Nov 20th

2000 - First Crew arrived Oct 31st

2011 - ISS completed

2020 - over 250 people from 18 countries have visited the ISS

The ISS flies at an average altitude of 400 kilometers above Earth

It circles the globe every 90 minutes at a speed of about 28,000 km/h.

Hazards of Life on the ISS

• Lift Off

The space shuttle program was retired in July 2011 after 135

missions, including the catastrophic failures of Challenger in 1986 and

Columbia in 2003 that killed a total of 14 astronauts.

The Apollo Program was re-engineered after the death of 3

astronauts during the testing of the Apollo 1

Hazards of Life on the ISS

• Micro-gravity effects an Astronauts…..

Bone Density

Muscle

Circulation

Eyesight

Hazards of Life on the ISS

• Radiation

Hazards of Life on the ISS

• Space Debris

• Micro-meteorites

• Extreme Temperature

• Space Vacuum

More than 500,000 pieces of

debris, or “space junk,” travelling

at 17,500mph are tracked as they

orbit the Earth

Small piece of orbital debris can

easily damage a satellite or a spacecraft.

Assignment

• Design an A4 page size poster outlining the hazards a human would be exposed to during a Space Flight and their effects on the human body.