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Download Grade 6 Science Study Guide Test Date: Friday, October 10th Term
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Grade 6 Science Study Guide Test Date: Friday, October 10th Term Definition Galaxy a large group of stars, dust and gas held together by gravity Hubble’s Law States the further a galaxy is, the faster it is moving away from us 3 shapes of galaxies Irregular, elliptical, spiral Cosmic background radiation Was discovered on a radio telescope. This form of radiation appears as a flow and is believed that this form of radiation is left over from the big bang theory Big Bang theory Planetisimal Dark matter dark energy Light spectrum Universe The universe formed in an instant, billions of years ago in an enormous explosion Small asteroid like bodies is matter that does not give off electromagnetic radiation a mysterious force causing the expansion of the universe to accelerate The breaking down of light from celestial objects into ROYGBV All of space and everything in itpeople, stars, planets Redshift The red light which helps us located the position of a galaxy- the red comes from ROYGBV Hubble’s Law Was proof that we live in an expanding universe – it laid the foundation for the Big Bang Theory Space A portion or area – the amount of area that is available for use Planets Formed when planetisimal collide and stick together sun Center of the solar system; medium sized star Solar nebula A large cloud of dust and gas, which formed our solar system proton A particle that has a positive electric charge- found in the nucleus of the atom Neutron No charge, nucleus Electron A particle with a negative chargenot in the nucleus Nucleus of the atom Central part of the atoms that contain the protons and neutron Atom Building blocks of matter Radiation A process by which energy comes to earth by form of waves Energy The ability to do work spectroscopy The study of light from celestial bodies Nuclear fusion The process which fuels the sun-this happens when hydrogen and helium atoms collide The only electromagnetic waves from the electromagnetic spectrum that we can see Visible light Light spectrum Visible spectrum light we can see Edwin Hubble Made many observation that showed the universe to be expanding The Steps of the Big Bang Theory Believed the universe began about 14 million years ago 14 billion years ago our universe was inside a bubble thousands of times smaller than a pin head It was hot and dense It suddenly exploded The universe was born Time, space, and matter all began with the big bang
