2. Planetary System Vocab

3. The planets spin on an axis

4. Revolution The Earth’s orbit or movement around the Sun

5. Axis Imaginary line running from north to south

6. Angle of Insolation The angle at which the Sun’s light hits the Earth

7. Spring Tide The highest high tides and the lowest low tides that occur during new & full moons

8. Neap Tides The lowest high tides & highest low tides that occur during quarter moons

9. Waxing When the moon gains light

10. Waning When the moon loses light

11. Gibbous More than 50% of the moon is illuminated by the sun from earths view

12. Crescent Less than 50% of the moon is illuminated by the sun from Earth’s view

13. Quarter Exactly 50% of the Moon is illuminated by the Sun from Earth’s view

14. Full moon 100% of the Moon is illuminated by the Sun from Earth’s view

15. New m n 0% of the Moon is illuminated by the Sun from Earth’s view

16. Lunar eclipse When the Moon passes into the Earth’s shadow

17. Solar eclipse When the Earth passes into the Moon’s shadow

18. Galactic address The place in the universe which we live in, starting with the universe and working towards our house address

19. Gravity factor The amount which gravity affects the mass of an object

20. Weight The measurement of gravity’s effect on mass

21. How much would I weight on... Earth: 105 The Moon: 17.4 The Sun: 2842.5 Mercury: 39.6 Venus: 95.2 Mars: 39.5 Jupiter: 248.2 Saturn: 111.7 Uranus: 93.3 Neptune: 118.1 Pluto: 7