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Solar System Inner Planets Activity for Kids

Kids will be fascinated and engaged as they learn about the inner planets for kids! These inner planets activity ideas are a great way for students to explore the planets in our solar system for kids – Mercury, Mars, Venus, and Earth.  The science unit covers Mercury, Venus, Earth, and Mars with lots of hands on science experiments and free worksheets for kids.  We have not only activities, but solar system for kids printables for preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders too. Simply print pdf file with inner planets worksheet pages, part of our solar system printable – now you are ready to play and learn!

Kids will be fascinated and engaged as they learn about the inner planets for kids! These inner planets activity ideas are a great way for students to explore the planets in our solar system for kids - Mercury, Mars, Venus, and Earth.  The science unit covers Mercury, Venus, Earth, and Mars with lots of hands on science experiments and free worksheets for kids.  We have not only activities, but solar system for kids printables for preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders too. Simply print pdf file with inner planets worksheet pages, part of our solar system printable - now you are ready to play and learn!

Inner Planets for Kids

We are continuing on in our solar system unit. We’ve talked about the sun and now we are ready to start learning about the Solar System’s inner planets activity. We read books, did some hands-on inner planets activities, and of course added in some inner planets worksheets. : Mercury for kids, Venus for kids, Earth for kids, and Mars for kids. This is a really fun, hands on unit includes both solar system science experiments and solar system for kids printables to help kids learn while having fun.

Solar system printable

Start by scrolling to the bottom of the post, under the terms of use, and click on the text link that says >> _____ <<. The pdf file will open in a new window for you to save the freebie and print the template.

Mercury Science Project for Solar System Unit for Kids

Mercury for Kids

Mercury is a small planet and the planet closest to the sun. Only one space craft (Mariner 10) has gotten close to Mercury. During the day it is more than 750 F, but at night it gets down to -300 F.
We made a model of mercury by mixing 1 cup of flour, 1/4 cup salt, 1 teas oil, and 1/4 cup water. After we’d shaped it we hit the planet with rocks of different sizes to make the craters Mercury is known for.

Venus Science Project for Solar System Unit for Kids

Venus for Kids

Venus is the hottest planet in the whole solar system because of it’s location nearby the sun and dense atmosphere the traps in the sun’s heat. There are volcanoes that spew lava on its surface.

Igneous rocks for kids

To help the kids understand that Venus was so hot that rocks melted we set up this simple science experiment. We made a mound by overturning a custard dish and covering it and the surrounding area with flour. I showed them a 1/4 stick of butter was solid like rocks. I melted it in the microwave just like the heat melts rocks on Venus. Then we poured it over the center of the overturned custard dish so the kids would see it form streams. When it cooled down the butter turned back hard, just like the rocks on Venus.

Earth Science Project for Solar System Unit for Kids

Earth for Kids

We read several books  on earth discussing how the earth is the perfect home, the layers of the earth, how the atmosphere protects us (keeping us warm and burning up meteors before they hit the earth), how our tilt gives us seasons, and more.

Earth Science Experiment

For hands on activities consider making a playdough earth (showing the layers) or make a compass (because of our powerful magnetic field a compass always points north)
Mars Science Project for Solar System Unit for Kids

Mars for Kids

We learned the reason this planet is called the red planet is because the red look comes from the iron in the dirt. We talked about how scientists are hoping to have a colony on Mars someday (you can read more about this 2025 Mars settlement here)
 
This terrestrial planet has mountains, valleys, and volcanoes including a volcano called Olympus Mons the largest volcano in our whole solar system.
 

Homemade Volcano

To make our Olympus Mons we put red construction paper on a baking sheet. We put an empty 2L bottle in the center.
We wadded up paper around the 2L bottle to make the volcano. Then we covered the entire surface with our favorite playdough recipe tinted brown. The volcano looked amazing!
Now for the eruption! We put 6 teas baking soda in the bottle. In a separate measuring cup put 2 cups vinegar, red food coloring, and a squirt of dish detergent. When you are ready for the eruption pour the vinegar mixture into the bottle and stand back – it is going to erupt!
 
 
free planets worksheets for a solar system uni

Inner planets worksheet

Plus for every planet we studied the kids took notes on things they learned that were interesting using these free solar system worksheets for kids. (this set includes the workshet pictured above and many more!) 

solar-system-unit-about-the-sun-for-kids clever paint stick solar system project  Make learning about the solar system for kids FUN my making your own solar system project! This fun, inespensive solar system for kids is made of YARN! Children of all ages from preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th graders will enjoy making. This 3d solar system project is easy to make and an inexpensive way to make a solar system model that will leave an impression on kids! Use this as you study planets for kids, a solar system unit, a school project, or science fair projects kids will love! Don't forget to grab the free solar system printables to help students working on the solar system for kids project.   Hands-on activity to learn about constellations using pipe cleaners, beads, and constellation flashcards for an engaging STEM activity! Use to teach preschool, pre k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade and more about stars, solar system, astronomy or as a fun, educational science activity

Solar System Activities for Kids

Looking for more fun, hands on science activities to teach kids about astronomy or to round out your solar system for kids unit. You will love these hands on solar system activities and lessons:

  • The Sun Activities for Kindergarten – learn about the sun and how the planets orbit around it including a fun planets game for kids!
  • Moon Activities for Kids & Astronauts Too – make oreo moon phases, DIY telescope, learn about the astronauts who landed on the moon, and more!
  • Inner Planets for Kids (Mercury, Venus, Earth, Mars) – Use our free planet worksheets and fun hands-on activities like Mercury craters, Venus’ melting rocks, layers of the earth, and Erupting Mars Volcano
  • Outer Planets for Kids (Jupiter, Saturn, Uranus, Neptune) – combination of hands-on solar system projects and solar system printables; gaseous Jupiter, Saturn Rocket, plus cloudy Uranus and Neptune.
  • Pluto, Asteroid Belt, Comets, and Stars for Kids make a FUN constellation projector, cold Pluto ice cream project, and grape constellation project
  • Yarn Solar System Project – fun, unique, and easy solar system model that is cheap and so pretty!
  • Paint Stick Solar System Project – easy-to-make solar system model for kids that doubles as an activity for learning the names and order of the planets
  • Pipe Cleaner Constellations – fun hands on pipe cleaner constellations activity for kids
  • Simple Galaxy Science Experiments
  • Looking for more fun, engaging, creative, and memorable moon projects for kids? You will love this 50 Moon Activities for Kids & Crafts collection with the best ideas from the whole internet!
  • TONS of really cool Solar System Project Ideas for kids of all ages

Kids will have fun learning about our solar system with these free printable Solar System Worksheets for kids.  You’ll find solar system vocabulary, planets, sun, stars, moon phases, and so much more! These free worksheets are great for Kindergarteners, grade 1, grade 2, grade 3, grade 4, grade 5, and grade 6 students. Learn about the solar system for kids with these super cute, free printable solar system coloring pages. Simply print pdf file and print the solar system colouring pages to help teach toddler, preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th grade students about the planets in our solar system! There are over 15 different pages in this solar system coloring page pack to learn about Sun, Mercury, Venus, Earth, the Moon, Mars, Jupiter, Saturn, Uranus, Neptune, Asteroid Belt, Pluto, and the Milky Way Galaxy. Constellations Wheel Kids will have loads of fun learning about different star formations and their names with this easy-to-make Constellations Cootie Catcher. This is the perfect addition to your solar system for kids unit with preschool, pre k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th grade students

Free Solar System Printables

Plus, don’t forget to add these free solar system worksheets and printables to your lesson plan:

Learn how to make these beautiful chromatography flowers using coffee filters and markers. This is both a fun art project AND a simple science experiments for kids that explores colors while making pretty craft flowers for spring and summer.  This STEAM project is the perfect spring activity for toddler, preschoolers, pre k, kindergarteners, first grade, 2nd grade, and 3rd graders. Easy Ping Pong Ball Bernoulli's experiment water-balloon-science-experiments Looking for a really fun and memorable science experiment for kids? You will love these EPIC pop rocks experiment. Try this pop rocks science experiment with preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, and 4th grade students to try a simple chemical reaction. This Whether you try this pop rocks science experiments for homeschool science, at a science birthday party, or as part of a summer science project - this is a MUST try,  really cool science experimentkids will LOVE.

Science for Kids

Looking for lots more fun, science experiments for kids? You’ve GOT to try some of these outrageously fun science experiments for kids! We have so many fun, creative and easy science experiments for elementary age children:

This amazing color changing slime is going to blow your mind! This heat sensitive slime will actually change color as your kids touch it because it is heat sensitive! This is a super cool project for kids you MUST TRY! Must try summer activity for kids to add to their summer bucket list  Help kids learn about what is under their skin with this fun, interactive, and hands on human body project for kids from toddler, preschool, pre k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th grade students. This can be a simple life size human body project or use our free printable templates to add bones of the body, organ templates, and more. This engaging science project is EASY and LOW PREP too.  Looking for that really cool science experiment for kids that grabs kids attention, teaches, and makes them say WOW! This squishy circuits project is fun and easy to do with a kid-approve Lego theme to keep preschool, pre-k, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, 5th grade, and 6th grade students engaged. All you need are a few simple materials to try this Electricity Science Experiments and you are ready to play and learn! There are so many fun variations for this electricity experiments for kids

About the author

Beth Gorden

Beth Gorden is the creative multi-tasking creator of 123 Homeschool 4 Me. As a busy homeschooling mother of six, she strives to create hands-on learning activities and worksheets that kids will love to make learning FUN! She has created over 1 million pages of printables to help teach kids ABCs, science, English grammar, history, math, and so much more! Beth is also the creator of 2 additional sites with even more educational activities and FREE printables - www.kindergartenworksheetsandgames.com and www.preschoolplayandlearn.com

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