Solar System Test Review

Earth makes one full rotation on its axis approximately every 24 hours. Suppose Earth’s period of rotation increased to 28 hours. Which of the following changes would occur?

• There would be fewer days in a week.

• The length of daylight and nighttime would increase.

• Earth`s distance from the sun would decrease.

• It would take Earth longer to revolve around the sun.

Current scientific evidence indicates that there is no liquid water on Mars, but there is frozen water. This is due to the fact that temperatures on Mars, even during the summer, are well below 0°C (32°F). Which of the following changes would most likely allow for an increase in temperature and the presence of liquid water on Mars?

• a decrease in the tilt of Mars` axis

• an increase in Mars’ period and rotation

• an increase in Mars` period of revolution

• a decrease in Mars` distance from the sun

Astronomers believe that there are about 100,000 comets that travel through our solar system. Comets are chunks of ice, dust, and gas that orbit around our sun. Which of the following can be observed from Earth as comets get closer to the sun?

• They explode

• Their gasses burn.

• Their tails get longer.

• They begin to slow down

The Milky Way Galaxy would best be classified as…

• Barred Galaxies

• Spiral Galaxies

• Elliptical Galaxies

• Irregular Galaxies

Which of the following lists Earth, Jupiter, the Moon, and the Sun in order from largest to smallest?

• Jupiter, Earth, Sun, Moon

• Sun, Jupiter, Earth, Moon

• Sun, Jupiter, Moon, Earth

• Jupiter, Sun, Earth, Moon

Venus has the highest surface temperature of all the planets in our solar system. Which is the best explanation for this?

• Venus rotates on its axis very slowly.

• Venus is very close to the Sun.

• Venus revolves around the Sun relatively quickly.

• Venus's atmosphere has thick clouds and carbon dioxide.

. A hurricane-type cloud known as the Great Red Spot can be found on which planet?

• Saturn

• Mars

• Uranus

• Jupiter

A planet has twice the mass of Earth and the same radius as Earth. If you were standing on this planet, the force of gravity would be…

• twice that on Earth.

• half that on Earth.

• the same as on Earth.

• four times greater than Earth's.

How is Saturn different from Earth?

• Saturn is smaller than Earth.

• Saturn is closer to the Sun than Earth.

• Earth has a moon, while Saturn does not have any moons.

• Earth is made mostly of rock, while Saturn is made mostly of gas.

What is the name of a model of the solar system in which Earth and the other planets revolve around the sun?

• Solcentric

• Heliocentric

• Macrocentric

• Geocentric