Early Models and Astronomers May the Force be with you Ch 27 & 28 Astronomy Early Models and Astronomers Planets May the Force be with you Shoot for the Moon Objects in Space 100 200 300 400 500

Model where planets revolve around the Earth Answer

Geocentric Home

What astronomer proposed the Geocentric model? Answer

Aristotle Home

Who proposed the Heliocentric model? Answer

Copernicus Home

The law that describes the path of a planet that orbits the sun is called ________ Answer

Law of Ellipses Home

What astronomer said planets moved in epicycles, which are little circles as they went around Earth? Answer

Ptolemy Home

What is the least dense planet that also has bands and rings made of dust and ice? Answer

Saturn Home

What is the largest planet in the solar system? Answer

Jupiter Home

Planet who’s axis is almost parallel to its plane of orbit Answer

Uranus Home

What planet gets its color from large amounts of methane? Answer

Uranus Home

What 2 inner planets are most alike in their size and mass? Answer

Venus and Earth . Home

Degree of elongation of an elliptical orbit Answer

Eccentricity Home

The time required for a body to complete a single orbit Answer

Orbital Period Home

Force that PULLS on a body in space Answer

Gravity Home

When a moving body remains in a constant motion unless acted on by an outside force Answer

Inertia Home

Pattern in which is appears as though the planets are moving backward relative to the stars Answer

Retrograde Motion Home

The force of gravity between Earth and moon cause _____ in bodies of water Answer

Tides Home

Dark areas on the moons surface Answer

Mare Home

When the lighted part of the moon appears to increase, the moon is said to be __________. Answer

Waxing Home

This occurs when the shadow of one celestial body falls on another celestial body Answer

Eclipse Home

Name one lunar surface feature Answer

Answers may include: Mare, rilles, ridges, craters, regolith Home

Fragments of rock that orbit the sun Answer

Asteroid Home

Small bodies of ice, rock and dust that follows highly elliptical orbits around the sun Answer

Comets Home

Any part of a meteoroid that didn’t burn up when entering the Earth’s atmosphere and reached Earth’s surface Answer

Meteorite Home

Region that starts beyond Neptunes orbit which contains dwarf planets and other small bodies of ice Answer

Kuiper Belt Home

Large cloud of dust and ice believed to hold nuclei of billions of comets and possible origin of our comets Answer

Oort Cloud Home