Give students a primer on the size of planets and distances in the solar system, providing examples from the Background section above.

Determine how much space students have to work with by measuring an open area at the school using an online mapping tool. Students can develop a permanent or semi-permanent display of their model on the school campus. To calculate the scale planet sizes, discuss proportions and ratios with students.

With students, point out the distances in astronomical units (au) from the Sun to each planet.

Remember, the calculated scale distances indicate radial distances to the planets, and because the planets orbit, the actual size needed for a scale model that allows for the placement of a planet anywhere in the model will be twice the calculated radial distance of the most distant planet. In other words, how far will Earth be from the Sun in this model? Just for reference, I put the closest star in here too approximates of the centauri of your closest star. Because planets are not aligned in a row stretching out from the solar system, have students place them at the proper distances at various points around the Sun. 1419 0 obj <> endobj © 2020 Leaf Group Ltd. / Leaf Group Media, All Rights Reserved.

Show them not-to-scale images of the planets and the solar system to demonstrate how size and distance are often portrayed incorrectly. Have students open the Scale Distance spreadsheet, or guide them through creating a similar spreadsheet layout. For example, Mars is 1.5 au from the Sun and Neptune is 30 au from the Sun. More information about astronomical units can be found in the Background section below. Example not-to-scale images of the solar system, Spreadsheet software (e.g., Excel or Sheets), Distance markers (cones, ground stakes, etc. Enter the multiplication formula into a cell in the cm column. Students may have to zoom in or out on the map to more easily see the required distances.

Remember, when students enter formulas into other cells in the column, they must change the formula to reference the correct cell. Choose one of the links below to view procedures for creating the scale solar system model of your choice: Scale Planet Diameter / Scale Earth Diameter = Actual Planet Diameter / Actual Earth Diameter | + Expand image, Scale Planet Diameter = Actual Planet Diameter (Scale Earth Diameter) / Actual Earth Diameter | + Expand image, Scale Diameter / Scale Distance = Actual Diameter / Actual Distance | + Expand image, Scale Diameter (Actual Distance) / Actual Diameter = Scale Distance | + Expand image, Scale Planet Distance / Scale Earth Diameter = Actual Planet Distance / Actual Earth Diameter | + Expand image. Classroom is the educational resource for people of all ages. And again, your sun is a centimeter, very very small, approximates centauri would be almost 300 kilometers away.

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Have students open the Scale Size and Distance spreadsheet, or guide them through creating a similar spreadsheet layout. Drawing the solar system on a centimeter scale will require you to draw a representation that isn't very big.

Ask students to guess how large a scale Sun would be.

And from there, we can decide how far everything else is away. Have students use various tools (ruler, compass, string, protractor, etc.) Using the decided upon scale diameter of Earth, have students rearrange the equation to solve for the unknown scale distance to the Sun. If students change the scale diameter of Earth in the spreadsheet, it will cause the functions to recalculate the scale values for the other planets. Have students open the Scale Size spreadsheet, or guide them through creating a similar spreadsheet layout.

Jupiter 5.55, and then we start really getting far away from the sun. Understand the concept of a ratio and use ratio language to describe a ratio relationship between two quantities.

In this activity, students will use scale, proportion and/or ratios to develop a scale solar system calculator and draw the Solar System to fit a page. %%EOF Mars is a meter and a half. 8) Fold the Sun to the Earth. Whether you’re studying times tables or applying to college, Classroom has the answers. Kinesthetic Radial Model of the Solar System, Solar System Sizes and Distances reference guide.

This is your model’s scale value. Even traveling at the speed of light, it would take about four hours to get from the Sun to Neptune – a distance of about 2.8 billion miles. You may choose to have students look up the information on their own and input it into a blank spreadsheet. Figure out which system of units your students will use: metric (SI) or U.S. customary units. Based on the Word Net lexical database for the English Language. Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships. Have students create a spreadsheet function that calculates this value.

My name is Eric Loberg with the Taylor Planetarium at the Museum of the Rockies. Depending on student abilities, consider using astronomical units (au) for distances instead of kilometers or miles.

Pluto is not a planet anymore, but I left it on this just so you know where it's at, it's 42 and a half meters away. Solve problems involving scale drawings of geometric figures, including computing actual lengths and areas from a scale drawing and reproducing a scale drawing at a different scale. Note: When 1 au = 10 cm, the scale distance to Neptune will be about 10 feet. Keep this in mind when considering the area you have to work with. Some scale models show just scale distances, some show just scale planet sizes, while some display both. All these other objects are just little specs, you can't even see them. It's really far out there from the sun; now, your just, your little tiny small sun. I left this on metrics since we're asking about centimeters.

In that case, have students choose a point on the map that is an accurate distance from the Sun at a location that is well known to students (e.g., a park or a neighborhood store). How does using both scale size and distance in a model differ from a model that uses only scale size or distance? Instead, to For example, "The ratio of wings to beaks in the bird house at the zoo was 2:1, because for every 2 wings there was 1 beak."

For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn. h�bbd```b``��� �����"�׀E����d��?yV�f���l-0�D��E����Iƍ�@�rk��A@��+$�]�ih� D@��2�T�$�2012�J�U20a�?��e ��

An accurate size and distance scale model in which Mercury, the smallest planet, is 1 mm across would require about half a mile to properly display the distance from the Sun to Neptune.

If students will input size and distance data themselves, have them do that now. The formula should multiply the au value by the scale value determined in Step 3.

A spreadsheet multiplication formula follows this format: =B3*10, where B3 is the cell with a planet’s au distance and 10 is the scale value.

See the.

This allows scientists to describe distances using smaller relatable numbers rather than tens of millions, hundreds of millions, or even billions of kilometers. See the. For example, =B3*10 is the correct formula for Mercury’s scale distance, while =B4*10 is the correct formula for the distance to Venus, and so on.

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