LEVEL 2
LAR SYSTE O M S
CONTENT-BASED LEVELED READER
HYB T XT RID T TEEX
THE SOLAR SYSTEM
& GRAVITY Kid E-LiT
R A SYST L O S EM E H T V A I TY R G &
(c) 2022 CI Liftoff
CI LIFTOFF E-LIT (c) 2021 CI Liftoff All rights reserved. May be duplicated & shared for CLASSROOM USE ONLY.
CI LIFTOFF E-LIT (c) 2021 CI Liftoff All rights reserved. May be duplicated & shared for CLASSROOM USE ONLY.
CI LIFTOFF E-LIT
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I am in my bedroom. 1
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Here is my book. I like to read in my room.
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My book is about the solar system. 3
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The solar system is very big. 44
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The sun is a star in our solar system. 5
The planets travel around the sun. 6
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Our solar system has one sun and eight planets.
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The sun is in the middle of the planets. 8
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The sun is very hot. 9
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The sun is over one million degrees. 10
The sun is how plants make their food. 11
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The sun is much bigger than the Earth. 12
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I like to learn about the planets in our solar system. 13
Jupiter
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Jupiter is the fifth planet from the sun.
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Jupiter
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Jupiter is the largest planet in our solar system. 15
Mercury is the closest planet to the sun. 16
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Mercury is the fastest planet in our solar system.
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A rocket is headed to Mercury from Earth.
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Mercury
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Mercury is the smallest planet in our solar system. 19
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Mars is known as the Red Planet. 20
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Mars is the second smallest planet in our solar system. 21
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Mars has two moons called Phobos and Deimos.
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Venus is the second brightest object in the night sky after the Moon. 23
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Venus has many volcanoes. 24
It takes Uranus 84 years to go around the Sun one time. 25
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Uranus looks like a blue planet because of its gases.
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Saturn is the second largest planet and has rings around it. 27
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A rocket landed on Saturn to learn about the planet.
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Neptune is the furthest planet from the sun. It is blue too. 29
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Neptune is named for the Roman god of the sea because of its deep blue color. 30
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Earth is the planet where we live. 31
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Earth has lots of water in our oceans, lakes and rivers. 32
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I like to learn about gravity. 33
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ty
I like to learn about how gravity works in nature.
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Gravity is how the moon helps tides and birds. 35
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The moon helps birds know when to fly home.
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The Moon’s gravity pulls the oceans towards it, which makes the tide move.
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The moon is much smaller than the sun and Earth. 38
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Gravity from the sun holds the solar system together. 39
Gravity is the force that keeps objects together. 40
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Gravity makes things on Earth fall. 41
Gravity keeps our moon close to Earth.
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There is less gravity in outer space. 43
Less gravity allows astronauts to float. 44
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Gravity keeps us on Earth. 45
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Gravity is why we go down on a slide. 46
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Gravity is why we can swing. 47
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Gravity is why our milk stays in our glass.
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Gravity is why a baseball comes down. 49
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Gravity is why paper falls back to earth if you throw it up in the air. 50
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Gravity makes objects have weight. 51
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The pulling towards Earth gives us weight.
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Gravity pulls a person against the scale. 53
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The scale shows the force of gravity as the person’s weight.
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Spacecraft and satellites travel around Earth.
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Earth’s gravity keeps them going around the Earth. 56
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An astronaut is weightless inside a spacecraft in orbit around the Earth.
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The astronauts float freely. 58
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Without gravity on Earth, we would float away.
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Gravity holds us on the Earth. 60
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Gravity is the reason a ball comes back down. 61
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In 1666, Isaac Newton first described the force of gravity. 62
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He saw an apple fall from a tree. Why did it go down and not float?
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Newton wondered what made the apple fall down.
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He began to study gravity and made a formula for us to measure gravity. 65
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Gravity is a force in the universe and on Earth. It keeps us on Earth. 66
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It keeps us from floating in the air. 67
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It controls the ocean tides. 68
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Gravity keeps Earth and the planets in their orbit. 69
WORD LIST
Word List bedroom book solar system sun star planets around travel middle hot million Jupiter Mercury rocket moons Phobos Deimos Venus object volcano astronauts slide milk glass baseball plant swing river
Uranus blue rings Saturn gas learn Neptune Roman God sea Earth water ocean gravity nature birds moon fly tides holds together close outer space paper weight float tree apple food