Solar System

Front

Models of the solar system with Earth at the center are called _____________________ models.

Back

geocentric

Front

Models of the solar system with Sun at the center are called _____________________ models.

Back

heliocentric

Front

How many known planets are in our solar system?

Back

8

Front

What dwarf planet was downgraded from planetary status in 2006?

Back

Pluto

Front

According to the nebular theory, did the planets start forming before or after the Sun ignited?

Back

The planets started forming before the Sun ignited.

Front

What happens to the amount of the Sun's mass as it "burns"?

Back

It is converted into radiant energy.

Front

What is the age of the Sun?

Back

Nearly 5 billion years old.

Front

Where is the Sun located when you view a full Moon?

Back

During a full Moon, the Sun, Earth, and the Moon are lined up, with Earth in between.

Front

Why don't eclipses occur monthly, or nearly monthly?

Back

Eclipses occur only when the Moon is located at the intersection of the Moon's orbital plane and Earth's orbital plane, and the Sun is located on the same line with Earth and the Moon, which is relatively rare event.

Front

Between the orbits of what two planets is the asteroid belt located?

Back

Mars and Jupiter