Solar System
What are the three main layers of Earth?
1. Crust. 2. Mantle. 3. Core.
Why is Venus sometimes called "Earth's Twin"?
Because it is similar in size and mass.
The atmosphere on Mars is composed mostly of...
Carbon dioxide
What planet has 70% of it's surface covered with water?
Earth
Name the planet (s) that have at least one moon.
Earth and Mars
What planet(s) has a tilted axis that causes seasons?
Earth and Mars
Name the planets similar in size, density, and internal structure.
Earth and Venus
What is Earth's dense inner core made of?
Iron and Nickle.
How is the way Venus rotates different from other planets?
It rotates from East to West
Why does Mercury have a greater range of temperatures than any other planet?
It's because it has almost no atmosphere.
Of the inner planets, which is the farthest away (#4)
Mars
Which planet rotates on it's axis in about the same amount of time that Earth does?
Mars
Which planet's atmosphere has low air pressure and is mostly carbon dioxide?
Mars
Which planet is called the "red planet"and why?
Mars, because of the color of the dust from the red rocks witch can be found on Mars.
What planet has almost no atmosphere?
Mercury
What planet is closest to the sun?
Mercury
Name the terrestrial planets.
Mercury, Venus, Earth, & Mars. (the 4 inner planets)
Name the two moons of Mars.
Phobos and Deimos.
Define the greenhouse effect.
The trapping of heat by the atmosphere.
What similarities do all the inner planets share?
They are all small and dense, and they all have rocky surfaces.
True or false? The atmosphere of Venus is so thick that there is never a sunny day on its surface.
True
True or false? There are no canals on Mars.
True
What planet is the second-closest to the sun?
Venus
Which planet rotates in the opposite direction from most other planets and moons?
Venus
Which planet's atmosphere is so heavy and thick that it would crush a human?
Venus
What planet is sometimes called the Evening Star and why is it called that?
Venus, because it is often a bright object in the west after sunset.
Why do some regions on Mars look darker than others?
because of the red wind storms that blow the red dust away.
