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PVES Week 6
Planets and Earth Cycles
| Question | Answer |
|---|---|
| Early astronomers believed________ was the center of the universe and all other heavenly bodies. | Earth |
| What is the center of our solar system? | The Sun |
| Our solar system has _________ planets and ________ named moons. | 8 and 170 |
| Other than the planets and moons, what else rotates around the sun? | dust, gas, asteroids, and comets |
| What are the eight planets in order from the sun? | Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune |
| Planets that are made up mostly of rocks and minerals are ___________ planets. | Terrestrial |
| What four planets are considered terrestrial planets? | Mercury Venus Earth Mars |
| Planets that consist mostly of gas are considered __________ ____________ | Gas Giants |
| What four planets are considered gas giants? | Jupiter Saturn Uranus Neptune |
| Which planet is smaller than all other planets, heavily cratered, and located closest to the sun? | Mercury |
| _________ was reclassified as a dwarf planet. | Pluto |
| Which planet is similar to Earth in size and mass, and has a blanket of clouds that trap the heat from the sun? | Venus |
| Which planet looks similar to our moon? | Mercury |
| What are three major factors of Earth that make life possible? | air water distance from the sun |
| The fourth planet from the sun, _______, is thin with a vast network of canyons and riverbeds. | Mars |
| Scientists believe Mars was once a ________ planet with a _______ climate. | Wet Warm |
| Which planet is the largest in the solar system, made of gases, and has no solid surface? | Jupiter |
| All four gas giants have _______ | Rings |
| ___________ appears to be blue in color when viewed from a telescope. | Neptune |
| What are the planets sorted by size from largest to smallest? | Jupiter Saturn Uranus Neptune Earth Venus Mars Mercury |
| Pluto is no longer considered a planet in our solar system due to its small _______ and irregular _______ | Size orbit |
| On August 24, 2006 Pluto’s status was officially changed from a planet to a ________ ________. | dwarf planet |
| Ceres, Pluto and Eris are the first named _______ _______. | dwarf planets |
| Dwarf planets share its _________ _________ with other bodies of a similar size. | orbital space |
| Pluto is smaller than seven of the _________ in our solar system and cannot be seen without a telescope. | moons |
| Which planet was thought to be the only one with rings? | Saturn |
| Which planet’s surface is hot enough to melt lead? | Venus |
| The sun and all of the bodies (planets, moons, comets, asteroids) that orbit around it is the _____________. | solar system |
| A motion that involves spinning on an axis is a ________________. | rotation |
| Moving in a path around another object is called a ___________. | revolution |
| An object that orbits, or revolves around, another object is a __________. | satellite |
| A satellite of Earth is ___________________. | The Moon |
| The Earth completes one revolution around the sun every __________. | 365 1/4 days |
| The moon completes one revolution around the Earth about once a ____________. | month |
| The Earth makes one complete rotation on its axis every _________. | 24 hours |
| The sun is approximately _________ billion years old. | 4.6 |
| An average sized yellow star describes the ________. | sun |
| The size of the sun is approximately _________ times the diameter of the Earth. | 110 |
| We receive heat and light on Earth from a hot ball of gas called the ___________. | sun |
| A small rocky satellite of the Earth is the __________. | moon |
| The moon can be described as a satellite that has extreme ___________, no ______________, no __________ and no ___________. | temperature, atmosphere, water, life |
| The size of the moon is approximately ____________ the diameter of the Earth. | 1/4 Quarter |
| The mass of the moon is approximately _________ the mass of Earth. | 1/8 |
| 150 million kilometers is the approximate distance between the ____________ and __________. | Sun Earth |
| The phases of the moon are caused by the position of the _________ in relation to the ___________and _______. | Moon Earth Sun |
| There are ________ phases of the moon during one complete revolution. | 8 |
| The words “crescent”, “new”, “full”, and “quarter”, all relate to _____________ of the moon | phases |
| We experience day and night because of the ___________ rotation on its ________. | Earth's Axis |
| We experience different seasons because of the Earth’s axial _____________ as it revolves around the Sun. | tilt |
| Earth is the __________ planet from the Sun. | 3rd |
| Earth is one of the 4, rocky __________ planets. | terrestrial inner |
| A geologically active planet with a surface that is constantly changing describes the ____________. | Earth |
| The Earth’s oxygen rich atmosphere and large water supply make __________ possible. | life |
| The Earth’s protective _______________ blocks out most of the sun’s damaging rays. | Atmosphere |
| Aristotle and Ptolemy both believed that the __________ was at the center of the solar system. | Earth |
| Copernicus and Galileo both believed that the __________ was at the center of the solar system. | Sun |
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