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TRMS - S2 UNIT 4
UNIVERSE & SOLAR SYSTEM - 6TH GRADE EARTH SCIENCE
| Question | Answer |
|---|---|
| WHAT IS THE GEOCENTRIC MODEL? | any theory of the structure of the solar system (or the universe) in which Earth is assumed to be at the center of it all. |
| WHAT IS THE HELIOCENTRIC MODEL? | the astronomical model in which the Earth and planets revolve around the sun |
| NAME THE EARLY ASTRONOMERS WHO CONTRIBUTED TO THE GEOCENTRIC MODEL & NAME THEIR CONTRIBUTIONS: | Aristotle - published work based on the geocentric model Ptolemy - came up with the idea of "epicycles", small orbits within a planet's orbit around Earth |
| NAME THE EARLY ASTRONOMERS WHO CONTRIBUTED TO THE HELIOCENTRIC MODEL & NAME THEIR CONTRIBUTIONS: | Copernicus - the man credited with the creation of the heliocentric model Galileo - found evidence with telescope to support heliocentric model Kepler - had the idea of elliptical orbits Hubble - found evidence of galaxies expanding |
| WHAT WAS GALILEO'S EVIDENCE WITH A TELESCOPE THAT SUPPORTED THE HELIOCENTRIC MODEL? | 1. Phases of Venus, suggests that Venus orbits the sun 2. Found four moons revolving around Jupiter |
| NAME THE PLANETS, IN ORDER FROM THE SUN. | Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune |
| WHAT SEPARATES THE INNER AND OUTER PLANETS? | the Asteroid Belt |
| WHAT IS A COMET? | a small body of ice, rock and cosmic dust that follows an elliptical orbit around the sun and gives off gas and dust in the form of a tail as it passes close to the sun |
| WHAT IS AN ASTEROID? | a small, rocky object that orbits the sun |
| WHAT IS A METEOROID? | a relatively small, rocky body that travels through space |
| WHAT IS A METEOR? | a bright streak of light that results when a meteoroid urns up in the Earth's atmosphere |
| WHAT IS A METEORITE? | a meteoroid that reaches the Earth's surface without burning up completely |
| WHAT IS GRAVITY? | a natural phenomenon by which all things with mass or energy, including planets, stars, galaxies and even light, are attracted to (or gravitate toward) one another |
| WHAT IS INERTIA? | the resistance of any physical object to a change in its velocity. This includes changes to the object's speed, or direction of motion. The tendency of objects to keep moving in a straight line at a constant speed when no forces act upon them. |
| WHAT WOULD HAPPEN TO EARTH IF GRAVITY WERE REMOVED? | Earth would float, in a straight line, out into space |
| WHAT WOULD HAPPEN TO EARTH IF INERTIA WERE REMOVED? | Earth would be pulled into the sun |
| WHAT IS EARTH'S ADDRESS (SMALLEST TO LARGEST ITEM) | 1) Earth (person) 2) Solar System (house number) 3) Orion's Arm (street) 4) Milky Way Galaxy (town) 5) Local Group (state) 6) Local Supercluster (country) |
| WHAT ARE THE 3 MAIN SHAPES OF GALAXIES? | 1) Spiral (Milky Way is spiral) 2) Elliptical 3) Irregular |
| HOW AND WHEN DID THE UNIVERSE FORM? | Big Bang (rapid expansion); 13.7 bya |
| HOW AND WHEN DID THE SOLAR SYSTEM FORM? | Collapsing Solar Nebula; 4.6 bya |
| WHAT DO WE KNOW ABOUT GRAVITY AND DISTANCE? | The closer the objects, the more gravitational pull. Example: the sun has more gravitational pull on Mercury than on Earth because Mercury is closer to the sun |
Created by:
shannonbacha
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