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3. The cube of the mean distance of a planet from the Sun is proportional to the square of its orbital period T. Or, r3/T2 = constant. It is important to note that Kepler could not give a theory to explain the motion of planets. It was Newton who showed that the cause of the planetary motion is the gravitational force that the Sun exerts on ...
- Introduction
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- What Happened?
- Digging Deeper
- For Further Exploration
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Did you know that the Voyager 2 spacecraft took 12 years to travel from Earth to Neptune, the furthest planet in the solar system? This sounds like a really long time! Maybe not that long if you consider what distance the spacecraft had to travel to get from Earth to Neptune. In this activity, you will make a model of the planets in the solar syste...
Yarn, if possible, in up to 8 different colorsMeasuring tapeThumbtackTwo pieces of cardboard, about 6 cm by 6 cm eachYou probably noticed how the four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are all much closer to the Sun (at 4, 7, 10, and 15 cm from the Sun in your model) compared to the other four planets (Jupiter, Saturn, Uranus, and Neptune). These last four are much more spread out (at 50, 95, 190, and 300 cm from the Sun in your model)....
Planets are celestial bodies that orbit (or circle around) a star. In our planetary system, this star is the Sun. Planets are not self-luminous, they do not emit light like the stars, but they can be seen in the sky because they reflect light emitted by other celestial objects. The Solar System is the system of objects that orbit the Sun directly o...
Let your planets circle around the Sun at different speeds and see what happens to their relative positions.Calculate how small the planets would need to be to represent them accurately in your shrunken model. You can find the necessary information on the Solar Planet Data Sheet.Make a second model that accurately represents the different sizes of the planets in the solar system. One way to do this is explained in the How Big Are the Planets in Our Solar System?activity.Measure the distances between planets, example between Earth and Neptune. In what position on their orbit do the planets need to be for the distance to be the shortest possible, and in what positio...Links
1. NASA: Solar System Overview 2. National Geographic: Watch This Guy Build a Massive Solar System in the Desert
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Now that kids have an idea of the relative distance between planets, what do they think? Ask kids: • Why is it important to know these distances? • Who is it important to? • How do the distances between planets get measured? • What units are the best units for measuring these distances?
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The planets can be placed into two distinct groups. The four planets closest to the Sun are small and rocky and are often referred to as the inner, or terrestrial, planets (Figure 1). The outer four planets are much larger and very cold. These are the giant planets (Figure 2). Jupiter and Saturn are known as the gas giants.
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What is a Planet? Overview: Students learn about the characteristics of planets, comets, asteroids, and trans-Neptunian objects through a classification activity. Students can then apply what they have learned by participating in a formal debate about a solar system object discovered by the New Horizons spacecraft and by defining the term ‘planet.’
Planets There are eight planets in our solar system. In order of their distance from the sun, they are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. An easy way to memorise the name of the planets in order of their distance from the sun is: MY VERY EFFICIENT MOTHER JUST SERVED US NUTS. All the eight planets of the solar ...
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Download the 9th Class Science Lesson Plan for all the chapter-wise Free PDF for Teachers with complete Pedagogy, time division with instructions and worksheets.
