22 / 08 Tuesday Kaupapa: Discuss why Mars is the most habitable planet

Do you remember? Name the first five planets in our solar system Which planet is the largest? Which planet is the hottest? How many planets have no solids?

Why Mars?

Mercury (58,000,000 km) State: S Radius: 2500 km Time taken to orbit the Sun: 0.25 years Surface Temp: 450 oC # of Moons: 0

Venus (107,000,000 km) State: S / G Radius: 6000 km Time taken to orbit the Sun: 0.6 years Surface Temp: 500 oC # of Moons: 0

Earth (147,000,000 km) State: S / L / G Radius: 6500 km Time taken to orbit the Sun: 1 year Surface Temp: 20 oC # of Moons: 1

Mars (205,000,000 km) State: S / G Radius: 3500 km Time taken to orbit the Sun: 1.9 years Surface Temp: - 40 oC # of Moons: 2

Jupiter (741,000,000 km) State: G Radius: 70,000 km Time taken to orbit the Sun: 12 years Surface Temp: - 150 oC # of Moons: 16

Saturn (1,350,000,000 km) State: G Radius: 57,000 km Time taken to orbit the Sun: 29.5 years Surface Temp: - 160 oC # of Moons: 17

Uranus (2,750,000,000 km) State: S / G Radius: 25,000 km Time taken to orbit the Sun: 84 years Surface Temp: - 220 oC # of Moons: 5

Neptune (4,450,000,000 km) State: L Radius: 24,000 km Time taken to orbit the Sun: 165 years Surface Temp: - 230 oC # of Moons: 2

Pluto (7,400,000,000 km, average) State: S Radius: 2000 km Time taken to orbit the Sun: 365 years Surface Temp: - 230 oC # of Moons: 1

Mars is considered the most habitable planet in our solar system because: It has water It’s not too cold or too hot There is enough sunlight Gravity is 38% of our Earth’s It has an atmosphere A day on Mars is about 24 hours long

The Martian: Creative Problem-Solving What are the obstacles Mark Watney encounters while he is trying to survive on Mars? How does he overcome these obstacles? Describe how his knowledge and skills in various fields (Biology, Chemistry, Physics, Mathematics, etc.) allow him to survive.

What have we learned today? The Sun is made of two elements: what are they? How does the sun produce its energy?