Inner Planets

Which of the following planets experiences a runaway greenhouse effect?

• Venus
• Mars
• Mercury
• Earth

The right combination of temperature, water, and oxygen

• affects Neptune’s orbit.
• supports life on Earth.
• causes gas giants to form.
• results in storms on Jupiter.

What is at the center of the heliocentric model of the solar system?

• Earth
• Sun
• Moon
• Stars

What is earth's twin?

• Uranus
• Jupiter
• Mars
• Venus

Which terrestrial planet has a day that is close to two Earth months long?

• Mercury
• Mars
• Pluto
• Venus

Which of the following statements is NOT true about Olympus Mons?

• It is 3 times as high as Mt Everest
• It is the largest mtn in the solar system
• Its base is about the size of Arizona
• It has never erupted

What causes a high surface temperature on Venus?

• the density of its atmosphere
• the acid content of its atmosphere
• the fast period of rotation
• its retrograde spin on the axis

The inner planets are called terrestrial planets because

• they are very hot
• the can support life
• they have massive gas atmosphere
• they are very dense and rocky

The time that an object takes to complete its orbit once

• period of revolution
• period of rotation
• prograde rotation
• retrograde rotation

The amount of time it takes for an object to rotate once

• period of revolution
• period of rotation
• prograde rotation
• retrograde rotation