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Science!
| Question | Answer |
|---|---|
| Planets may have a terrestrial or ___ surface or a ____ surface. | Small/dense, Rocky |
| Jovian or gaseous planets are considerably ___ than terrestrial or inner planets. | Larger |
| Jovian/gas planets are ____ planets. | Outer |
| Terrestrial planets are ____ planets. | Inner |
| The outer planets have ____, but Saturn's are the most obvious | Rings |
| Movement of planets is based on their ___ around the sun and their ___ on their axis. | Revolution, Rotation |
| Not all ___ have moons. | Planets |
| Movement of moons is based on revolution around their ____. | Planet |
| Most asteroids are rock bodies that form in a region in the solar system known as the _______ ______. | Asteroid Belt |
| The asteroid belt is found between ____ and _____. | Mars and Jupiter |
| Some asteroids outside the asteroid belt have orbits that ___ Earth's orbit. | Cross |
| Comets have the three parts: Name them. | Nucleus, Tail, Coma |
| The tail always points ____ the Sun. | Away from |
| Comets have this type of orbit. | Elliptical |
| The Coma and ____ emerge as the orbit gets closer to the sun. | Tail |
| Nucleus is made up of | Ices of water, methane and ammonia and dust |
| Meteoroids are chunks of rock that move about ____ ____. | Interplanetary Space |
| The location and movement of meteoroids result in _______ or _______. | Meteorites or Meteor |
| When the chunk of rock burns up in planet's atmosphere. | Meteor |
| When the chunk of rock strikes the surface of a planet or moon. | Meteorite |
| The force the gravity is.. | A pull between all objects in the universe |
| The force is influenced by the ____ of the objects an the ___. | Mass and Distance |
| The closer the distance between objects the ___ the pull; the ____ has a greater effect on Earth's tides than the sun. | Greater, Moon |
| Why is the moon a greater effect on Earth's tides and not the sun? | The Moon is closer |
| The sun is a star in the Milky Way galaxy located..? | Spiral Arm |
| Spherical or flattened disks. | Spiral Galaxies |
| A nucleus of bright stars and two more spiral arms, or irregular, meaning no definite shape. | Irregular Galaxies |
| Astronomers use a unit of measurement called ______ _____ to measure the distance to stars and galaxies in space. | Light Years |
| Astronomers have to estimate this because you can't measure anything inside of it. | Black holes |
| The earliest ideas of our solar system came from _____. | Ptolemy |
| Ptolemy proposed the _______ model. | Geocentric |
| _____ put forth the Heliocentric model. | Copernicus |
| Who supported the heliocentric model using his telescope to make observations of Venus and Jupiter? | Galileo |
| Later, they found the orbits are actually ____. | Elliptical |
| Who discovered the orbits were elliptical? | Keplr |
| The elliptical theory was then found as truth by calculations done by? | Newton |
| Terrestrial planets are ____ than Jovian planets. | Smaller |
| Earth, Mercury, Venus, and Mars are ? | Terrestrial Planets |
| Jupiter, Uranus, Saturn, Neptune are ? | Jovian Planets |
| Spherical region of comets, stretches out more than 1,000 times the distance between the Sun and Neptune | What is an oort cloud? |
| Beyond Neptune's orbit; extends to about 100 times Earth's distance from the sun. | What is the Kuiper Belt? |
| The region of the solar system between Jupiter and Mars. | What is the Asteroid Belt? |
| What are the dwarf planets? | Puto, Eris, Makemake, Ceres, Haumea |
| Which dwarf planet is the largest? | Eris |
| All of these known Dwarf planets besides Ceres orbit behind Neptune's orbit. So what belt are they in? | Kuiper |
| Orbit the sun and have enough gravity to pull themselves into sphere, but they have other objects in the area of their orbits. | Dwarf Planets |
| Most comets originate in what cloud? | Oort |
| What is a Coma? | Clouds of gas and dust that form a fuzzy outer layer |
| The nucleus is ___ | Solid inner core of a comet |
| Some of a comet's gas and dust steam outward, forming a ____. | Tail |
| Most comets have ___ tails. | Two |
| Name comet's two tails | Gas Tail and Dust Tail |
| Gas Tails point ___ from the sun. | Away |
| Dust Tails point ___ the path the coma has taken. | Along |
| Some meteoroids form when Asteroids collide and Comets | Breakup |
| When a meteoroid hits earth, it heats up and becomes a _____. | Meteor |
| Large Meteors _____ burn up. | Don't |
| What is a meteor shower? | When Earth passes through an area with many asteroids. |
| Bits of ___ that broke off are also meteor showers. | Comets |
| Meteor showers occur every year as Earth passes through some areas. | Orionids, Perseids, Geminids |
| Elliptical Galaxies are shaped like ______ ellipses. | 3-D |
| Galaxies are grouped into larger units known as _____. | Clusters |
| What is a galaxy? | Massive, gravitationally bound systems that consists of stars and stellar remnants, an interstellar medium of gas and dust. |
| Milky Way galaxy belongs to the local group ___. | Clusters |
| When galaxies collide, a burst of energy creates ______. | Star Formation. |
| What is a pulsar? | Neutron Star |
| A low, or medium-mass star becomes a ____ at the end of its life. | White Dwarf |
| Which progression do astronomers expect our sun to follow as is runs out of fuel? | Red Giant, White Dwarf |
| A(n) __________ forms from the leftover material from a supernova and may contain as much as three times the mass of our sun. | Neutron Star |
| All stars are ___ at the beginning of their life. | Nebulas. |
| What determines the life of the star | It's mass |
| When is a star born? | During Nuclear Fusion |
| Scientists think the solar system formed about? | 4.6 billion years ago |
| What color are the coolest stars? | Red |
| What color are the brightest and hottest stars? | Blue |
| A contracting cloud of gas and dust with enough mass to form a star is a(n) __________. | Protostar |
| Uranus's tilt is different bc- | It tilts on the side |
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_Iced-Ti_