AST201H1 : study guide

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST201H1
• Professor: Stefan Mochnacki

Document Summary

totality of space, time, energy, and matter. big bang: beginning of the expansion of the universe. elements are manufactured by the recycling of stars. observable universe is separated from the rest of the universe by a horizon. observable universe is the part of the universe that the laws of physics allow us to see. Science process of trying to find natural explanations for natural phenomena by repeatedly following a cycle of hypothesis, prediction, and observation or experiment. scientific propositions must be falsifiable (can be proven false) Scientific method: 1) make observations, 2) ask a question, 3) suggest. Hypothesis, 4) make a prediction, 5) perform test. Earth"s orbit revolution around the sun (years) Earth is on an axis tilt (results in seasons: speed rate at which an object moves (m/s) = distance/time, velocity speed and direction, accelerations any change in velocity units of speed/time (m/s. all falling objects accelerate at the same rate (vacuum)