so that they know the distance of the planets
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Astronomers used methods such as parallax and observations of planetary motion to determine the scale of the solar system before the invention of radar. By measuring the positions of celestial objects at different points in Earth's orbit, they could calculate distances within our solar system. Johannes Kepler's laws of planetary motion also provided insights into the relative distances of planets from the Sun.
conceptual model :A conceptual model uses idea to suggest what system is or how it works.A physical model : A physical model might be a scale model , either larger or smaller than the actual system it represents.
The sun, followed by the gas giant planets.
The height of a ball is 12 m A scale model is made of a hall The height of the scale model of the hal is 30 cm Express the scale of the model in the form 1n?
It would depend on the scale of the model!
a atomic scale system
One example is a 3D physical model, such as a scale model of a molecule or a model of the solar system. These physical models allow for hands-on interaction and visualization of scientific concepts.
It is called a scale.
a 3D scale model of earth
the twelve tone system
A scale model of the solar system is called an "orrery". There are a number of orreries of various sizes in cities around the world.In the UK - There is one at Shoreham, another at York and a canal walk in Somerset. Possibly the worlds largest scale model covers the whole of the UK and Northern Island. [See related link]