Dark Matter & Dark Energy PDF

Dark Matter & Dark Energy Copy Me!  Unit Objective ⋆ Predictable phenomena on Earth, including seasons and eclipses, are caused by the relative positions of the sun, Earth and the moon 2 Lesson Objective Success Criteria ⋆ Underst...

Dark Matter & Dark Energy Copy Me!  Unit Objective ⋆ Predictable phenomena on Earth, including seasons and eclipses, are caused by the relative positions of the sun, Earth and the moon 2 Lesson Objective Success Criteria ⋆ Understand that the ⋆ Describe what dark Universe has a matter and dark energy multitude of different is energies and matter that may not be observable 3 Copy Me!  Dark Matter ⋆ The universe is made up of matter ⋆ Atoms that absorb and emit electromagnetic radiation ⋆ Dark matter are particles which do not absorb, reflect, or emit electromagnetic radiation ⋆ Therefore, cannot be observed by conventional means 4 Copy Me!  Dark Matter ⋆ Dark matter is indirectly observed ⋆ Studied through the interactions it has with other celestial objects ⋆ Dark matter still has mass ⋆ Massive mass causes light to bend around other galaxies 5 Copy Me!  Dark Matter ⋆ Understanding dark matter will allow us to understand the size, shape, and future of the Universe ⋆ Determines if the Universe is open (continues to expand), closed (expands toa points then collapses), or flat (expands and stops when reaches equilibrium) ⋆ As a galaxy spins it should be torn apart ⋆ Is held together by gravity; but the amount of gravity required far exceeds the gravity created from the visible mass6 in the galaxy 7  Dark Energy ⋆ Is a hypothetical form of energy which exerts a negative, repulsive pressure ⋆ Behaves like the opposite of gravity ⋆ Similar to dark matter, dark energy is not directly observed ⋆ Indirectly observed through its influence on other objects 8 Copy Me!  Dark Energy ⋆ Is believed to make up 72% of the total mass-energy density of the Universe ⋆ Dark matter makes up 23% ⋆ Baryonic matter makes up remaining 5% 9 Copy Me! 10  Websites ⋆ https://starchild.gsfc.nasa.gov/docs/Sta rChild/universe_level2/darkmatter.html ⋆ https://astronomy.swin.edu.au/cosmos/ D/Dark+Energy 11