Solar System

Our Solar System consists of ...

• the Sun

• 8 planets

• galaxies

• everything that is connected by gravity to the sun

What do you need to be a planet?

• Be in orbit around a star

• to be part of the solar system

• Have its own gravity (this gives planets their round shape)

•  Have its orbit free (the path it takes cannot be obstructed by any other planet)

How to memorize the planets of the solar system?

• Using the planets

• Using mnemonics

• Using your memory

________ is the spinning motion on its own axis

_______ is the orbital motion around another object

How long does it take to complete one Revolution around the sun ?

• 365 days and 6 hours

• 24 hours

How long does it take to complete a Rotation around its axis ?

• 365 days and 6 hours

• 24 hours

The time it takes a planet to complete a Revolution depends on the ____ from the sun and the _____ of the orbit, and also the ____ in which they orbit

• length/ speed / distance

• speed / distance / length

• distance / length / speed

• distance / speed / length

Revolution and the Earth's tilted axis make up the ....

Every 4 years we add one more day to our calendar. This year is called ...

• leap year

• sixth year

• sexto year

• long year