The Pull of the Planets
EXPLORE! Solar System
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The Pull of the Planets

Correlations to National Science Education Standards

Grades 5–8
Science as Inquiry – Content Standard A
Abilities Necessary to Do Scientific Inquiry

  • Different kinds of questions suggest different kinds of scientific investigations. Some involve making models.

Physical Science – Content Standard B
Motions and Forces

  • The motion of an object can be described by its position, direction of motion, and speed.

Earth and Space Science – Content Standard D
Earth in the Solar System

  • Most objects in the solar system are in regular and predictable motion. Those motions explain such phenomena as the day, the year, phases of the Moon, and eclipses.
  • Gravity is the force that keeps planets in orbit around the Sun and governs the rest of the motion in the solar system. Gravity alone holds us to Earth's surface and explains the phenomena of the tides.


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