Show Menu
Cheatography
  1. Home >
  2. Education >

Earth & Spaces Cheat Sheet by

1. Different models of the Solar System. 2. Causes of the season. 3. The properties of magnetism. 4. The Earth's magnetic field and how it affects compasses. 5. The shape of a magnetic field. 6. The factors that affect the strength of gravity. 7. Calculate weight 8. How gravity affects objects in space.

Models of Solar System

Ptolemy's Geocentric Model -> Earth at the center and accepted for over 1500 years
Copern­icus' Helioc­entric Model -> Sun at the center, circular planet orbits
Galileo's Contri­butions -> One of the first telescopes (support Copern­icus)
Kepler's Improved Model -> Elliptical orbits and moons orbiting planets
Phases of the Moon -> Appears in different shape in different time

Causes of Season

The Earth rotates on its axis (rotation) and resolves around the Sun (revol­ution)
Daylight (the hemisphere experi­encing summer (e.g., the Northern Hemisp­here) is tilted towards the sun)

Properties of Magnetism

North and South poles attract, similar pole repel
Discovered by Chinese 200 BCE thousands years ago
Magnetism (Physical) -> Allows certain materials to attract or repel each other.

Earth's Magnetic Field

Magnetic Field -> Space around a magnet where its force is felt
To find magnetic field, use iron fillings or compass.
Earth’s magnetic field is generated by the movement of molten iron in its outer core.
Protects the planet from harmful solar radiation by deflecting charged particles from the sun.
 

Shape of Magnetic Field

Factors that Affect Gravity Strength

Gravity -> Force that pulls object together.
Earth's Gravity (9.8) pull everything toward center.
Weight -> Force of gravity on an object
N = kg x N/kg
Earth orbits sun at 100,000 km/h.
Factors -> Mass, Distance, Density, Location, Presence of Nearby Masses

Gravity Affect Objects in Space

Keeps planets in orbit around the sun, preventing them from flying off into space.
Causes moons to orbit planets and governs the motion of satellites
Pulls matter together, which is how stars and galaxies are formed
Affects the paths of comets and asteroids as they travel through space.
Affects microg­ravity enviro­nment like ISS.
                   
 

Metadata

  • Languages:
  • Published: 29th May, 2025

Comments

No comments yet. Add yours below!

Add a Comment

Your Comment

Please enter your name.

    Please enter your email address

      Please enter your Comment.

          Related Cheat Sheets

          A-Level Physics Key Terms Cheat Sheet
          Astronomy Vocabulary Cheat Sheet

          More Cheat Sheets by Elf Fatmawati

          Energy (Thermal Energy) Cheat Sheet
          Respiration (Biology 8th Grade) Cheat Sheet