Draw and Label the Planets in Order: Size Comparison Worksheet

Object Drawing Lessons

This lesson teaches two linked skills: placing the eight planets in correct order from the Sun and comparing their sizes using a simple shading convention. Students work on a planned worksheet that shows a blank ordered row of circles at comparative sizes, a label bank, and a size-comparison bar. The task excludes surface detail, orbital mechanics, and scale-accurate distances. All resources are free but planned, not yet built. The instructional text below is complete and self-contained; any diagram needed for an exercise is described in words so students can draw it themselves.

Practice materials: Printable downloads are not available for this lesson yet. Use the instructions and four exercises below.

Reference illustration

Use the stated measurements and conventions for each exercise.

Ordering the planets from the Sun

The eight planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. A common memory phrase is My Very Educated Mother Just Served Us Noodles, where each word starts with the same letter as a planet. The order never changes, so students can check their row by reciting the phrase and matching the first letters.

On the worksheet, the ordered row has eight blank circles. Students write each planet name below its circle in the correct position. The label bank lists all eight names in mixed order so students must recall the sequence rather than copy it directly. A useful check is to count from the Sun: position one is Mercury, position four is Mars, position five is Jupiter, and position eight is Neptune.

1. Recite the memory phrase and write the first letter of each planet above the row.
2. Match each letter to a name in the label bank and write the full name below the correct circle.
3. Check the row by counting positions: 1 Mercury, 2 Venus, 3 Earth, 4 Mars, 5 Jupiter, 6 Saturn, 7 Uranus, 8 Neptune.
4. Confirm that no name is used twice and that all eight names appear exactly once.

Comparing sizes with a shading convention

The worksheet uses a defined convention with four shaded heights. Each planet circle is drawn at a comparative size, and students shade the circle from the baseline upward to one of four heights: one-quarter height for smaller than Earth, one-half height for about Earth-sized, three-quarters height for larger than Earth but smaller than Jupiter, and full height for Jupiter-sized or larger. This convention allows valid alternatives because students may use different shading styles, such as cross-hatching or solid fill, as long as the shaded height matches the chosen band.

Relative diameters, using Earth as 1 unit, are approximately: Mercury 0.38, Venus 0.95, Earth 1.00, Mars 0.53, Jupiter 11.2, Saturn 9.4, Uranus 4.0, Neptune 3.9. These are hypothetical example values for comparison only; students do not need to calculate exact ratios. The size-comparison bar on the worksheet shows four bands: smaller than Earth, about Earth-sized, larger than Earth but smaller than Jupiter, and Jupiter-sized or larger. Students shade each circle to the height that matches its band. Use these thresholds consistently: values below 1 are smaller than Earth; values near 1 (about 0.95 to 1.00) are about Earth-sized; values greater than 1 and less than 11.2 are larger than Earth but smaller than Jupiter; values 11.2 and above are Jupiter-sized or larger.

1. Read the relative diameter value for each planet from the size-comparison bar.
2. Decide which band the planet belongs to: smaller than Earth, about Earth-sized, larger than Earth but smaller than Jupiter, or Jupiter-sized or larger.
3. Shade the circle from the baseline to the height for the chosen band: one-quarter height, one-half height, three-quarters height, or full height.
4. Label each shaded circle with the planet name and the band name so the comparison is clear.

Checking order and size together

A complete answer has two parts: the correct order and a size shading that matches the band. Students should check both parts separately. First, verify the order using the memory phrase and position count. Second, verify each shading by asking whether the shaded height matches the correct band height: one-quarter for smaller than Earth, one-half for about Earth-sized, three-quarters for larger than Earth but smaller than Jupiter, and full for Jupiter-sized or larger. If a circle is shaded taller than its band height, the student has chosen a larger band than needed; if shaded shorter, the band is too small.

The rubric rewards correct order, correct band choice, consistent shading, and clear labels. Because letter styles and shading styles vary, the rubric accepts any legible handwriting and any consistent shading method. The key is that the convention is applied consistently across all eight circles.

1. Check order first: recite the phrase and confirm each position.
2. Check size second: compare each shaded height to the four band heights and the band label.
3. Check labels: every circle has a planet name and a band name.
4. Check consistency: the same shading style is used for all circles.

Worked example

A student draws eight circles in a row and writes the planet names below them. The student shades Mercury to one-quarter height, Venus to one-half height, Earth to one-half height, Mars to one-quarter height, Jupiter to full height, Saturn to full height, Uranus to three-quarters height, and Neptune to three-quarters height. Check the order and the size bands.

Four practice exercises

Common mistakes

• Placing Jupiter before Mars because it is larger. Order is by distance from the Sun, not by size. Mars is fourth and Jupiter is fifth. Recite the phrase and count positions to confirm.
• Shading every circle fully because larger planets seem more important. Use the band system: only Jupiter-sized or larger planets get full-height shading. Smaller planets get shading at one-quarter, one-half, or three-quarters height depending on their band.
• Writing planet names in the label bank order instead of the correct order. The label bank is mixed on purpose. Match each name to its position using the memory phrase, then write it below the correct circle.
• Using different shading styles on different circles. Choose one shading style, such as cross-hatching or solid fill, and use it for all eight circles so the comparison is fair.

Self-check rubric

• Order: all eight planets placed in correct sequence from the Sun (4 points).
• Size bands: each circle shaded to the correct band using the four-height shading convention (one-quarter, one-half, three-quarters, or full height) (4 points).
• Labels: every circle has a legible planet name and band name (2 points).
• Consistency: one shading style used across all circles (1 point).
• Valid alternatives: any legible handwriting and any consistent shading style accepted (1 point).

Questions and answers