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9 Cards in this Set

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Describe the shape of every planet's orbit

Ellipitical (ellipse)


Explain how the planets continue to revolve around the sun without flying off in a strait line

The grivitational pull of the sun allows for the plantes to revolve

What is the purpose of using (AU) astronomical units

To make it easier for astronamers to measure the average distance from the sun to earth

Explain y a planet would have a greenhouse effect

The planets atmosphere drops solar energy and causes surface temp to increase

List the common traits of the inner planets

Closest to the sun


Made of rock and metal


Solid outer layers

What are the names of all the planets in order

Mercury, venus, earth, mars, jupitar, saturn, uranus, neptune, pluto

Explain y venus's day would be longer than its year

Rotates so slowly that the day is longer than its year day224 earth days year225 earth days

Which of the following would be best for a scientists to use when measuring distances from our solar system to a new one

AU


Much easeir numbers to manage

Describe how the inner and outter planets differ

Inner:closest to the sun, smaller, solid outer layer, made of rock and metal


Outer: primarly hydrogen and helluim, strong gravitational pull, larger, gas giants, solid core, liquid gas layer.