Earth In Space Question Preview (ID: 37856)


Astronomy.

What is the shape of Earth's orbit?
a) Round
b) slightly elipitcal
c) eliptical
d) flat

Most objects in the solar system are
a) in regular and predictical motion
b) not in motion
c) motion is not regular or predictiable
d) regular but not prediciticable

Which object orbits Earth in both the Earth centered (geocentric) and Sun-centered (heliocentric) motdels of our solar system
a) the Sun
b) Venus
c) Polaris
d) The Moon

Compared to the terrestrial planets, the Jovian planets have
a) smaller diameters
b) greater than average densities
c) longer than periods of revolution
d) slower rates of rotation

A major belt of asteroids is located between Mars and Jupiter. Waht is the approximate average distance between the Sun and this major asteroid belt?
a) 110 million kilometers
b) 390 million kilometers
c) 220 million kilometers
d) 850 million kilometers

Scientists believe that a large asteroid struck Earth approximately 65 million years ago. It is often theorized that this event contributed to the
a) end of the last ice age
b) breaking up of the supercontinent Pangea
c) extinction of the dinosaurs
d) evolution of the first birds

There is evidence that an asteroid or a comet crashed into the Gulf of Mexico at the end of the Mesozoic Era. Conseqeuences of this impact event may explain the
a) extinction of ammonoids and dinosaurs
b) extinction of many kinds of marine animals
c) appearance of the earliest birds and mammals
d) appearance of great coal-forming forests

The Foucault pendulum provides evidence of Earth's
a) revolution around the Sun in a geocentric solar system
b) revolution around the Sun in a heliocentric solar system
c) rotation on its axis in a geocentric solar system
d) rotation on its axis in a heliocentric solar system

Comared to the average density of the terrestrial planets, the average density of the Jovian planets is
a) less
b) more
c) the same
d) neither

Terrestrial planets move more rapidly in their orbits than the Jovian planets because terrestrial planets are
a) rotating on a tilted axis
b) more dense
c) closer to the sun
d) more massive

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