Objects in the solar system

Objects in the solar system

Part 2

Dwarf Planets

• Dwarf planets are rocky or icy bodies that orbit the sun

• They must have enough mass to be mostly round

•  However, they do not have enough mass and gravity to clear the space around itself

 Scientists have identified five dwarf planets in our solar system: Ceres, Pluto, Makemake, Haumea, and Eris. Some of these dwarf planets have moons, some do not. 

-suspected that at least 40 more objects in the solar system are dwarf planets.

Multiple Choice

The dwarf planet located in the asteroid belt is ___

• Ceres

• Eris

• Pluto

• Make make

Multiple Choice

Pluto is a dwarf planet that is part of the...

• Oort cloud
• Kuiper Belt
• Moon system of Neptune

Multiple Choice

Which is true of the dwarf planets?

• more massive than nearby objects

• never have moons

• orbit near the Sun

• spherically shaped

Regions in our solar system

Kuiper Belt

• The Kuiper (K-eye-per) Belt is similar to the asteroid belt found between the orbits of Mars and Jupiter, but it is 20 times as wide and somewhere between 20-200 times more massive.

• At least three dwarf planets are located in the Kuiper belt: Pluto, Haumea and Makemake.

• The Kuiper belt contains millions of icy objects ranging in size from small lumps of ice to large objects ​.

• The Kuiper Belt is a doughnut-shaped ring, extending just beyond the orbit of Neptune from about 30 to 55 AU.

Multiple Select

Select three known Kuiper Belt Objects?

• Makemake

• Pluto

• Neptune

• Eris

• Titan

The Kuiper Belt is as old as the Solar System. It was during the formation of our Solar System that most of rocks, dusts and gases were used up to form the Sun and the 8 planets. The remaining rocks, dusts and gases were then swept away into the Sun or the outer reaches of the Solar System.

Multiple Choice

When did the Kuiper Belt supposedly form?

• 1,000,000 years ago

• Before the Big Bang

• With the rest of the solar system

• After our solar system?

Multiple Choice

What distance from the sun is the inner edge?

• 30 AU

• 100 AU

• 4 gallons

• 55 AU

Multiple Choice

What was the first Kuiper Belt Object discovered?

• Makemake

• Haumea

• Neptune

• Pluto

Oort Cloud

 is a spherical cloud of comets believed to lie roughly 50,000AU, or nearly a light-year, from the Sun

Long-period comets (which take more than 200 years to orbit the sun) come from the Oort Cloud.

he Oort Cloud may contain more than a trillion icy bodies.

Multiple Choice

Which object is the furthest our in our solar system?  

• The Sun
• Pluto
• Oort Cloud
• Kuiper Belt

Multiple Choice

The _______ exists much further out than the Kuiper belt and is at the very edge of the Solar System. Scientists believe it is made up of thousands of small ice objects.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort Cloud

Multiple Choice

All the known dwarf planets EXCEPT Ceres orbit in the _________.

• asteroid belt
• Milky Way
• Kuiper belt
• Oort Cloud

Multiple Choice

Most comets originate in the ________.

• asteroid belt
• Milky Way
• Kuiper belt
• Oort Cloud

Multiple Choice

Between Mars and Jupiter is a region of the solar system called the __________.

• asteroid belt
• Milky Way
• Kuiper belt
• Oort Cloud