Sassafras Astronomy Chapter 15

What are four characteristics of the dwarf planet that the definition on p. 280 includes?

• celestial body

• orbits the sun

• has a nearly round shape

• is not a satellite

• orbits around another planet

The fact that dwarf planet is not a satellite means that it does not orbit another planet.

• TRUE

• FALSE

Which of these celestial bodies are considered dwarf planets today?

• Pluto

• Eris

• Makemake

• Ceres

• Haumea

Today, we have ​ (a)   planets in our solar system that are considered dwarf planets.

• five
• ten
• seven
• twelve

Tags

NGSS.MS-ESS1-3

Select the one that was considered ninth planet before 2006?

Tags

NGSS.MS-ESS1-1

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

NGSS.MS-PS2-4

The decision to downgrade Pluto from the planet status came after discovery of which two dwarf planets?

• Haumea and Sedna
• Sedna and Eris
• Eris and Charon
• Ceres and Makemake
• Eris and Makemake

Pluto has been considered a planet for about

Pluto is ​ (a)   than Earth's moon.

• smaller
• larger

Tags

NGSS.MS-ESS1-3

Pluto has several​ moons itself, the largest of which is named​ (a)  

• Charon
• Titan
• Europa
• Ganymede
• Calypso

Match the following numbers of years it takes the dwarf planet to complete one orbit around the sun.

• 557

• Ceres

• 285

• Haumea

• 305

• Eris

• 4.5 years

• Makemake

• 248

• Pluto

Tags

NGSS.MS-ESS1-3