Criteria for a celestial body to be a planet. SECOND: The object should be __________ in shape
spherical
When was Pluto discovered?
1930
1935
1940
1945
How many planets are there in our solar system?
8
Can you name all the planets from the closest to the Sun to the farthest?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Can you name all the planets from the farthest to the closest to the Sun?
Neptune, Uranus, Saturn, Jupiter, Mars, Earth, Venus, Mercury
Who discovered Pluto?
The Italian astronomer Galileo Galilei
The American astronomer Clyde Tombaugh
The British scientist Isaac Newton
What's the weather like on Pluto?
It's icy and cold.
Which is the largest planet in our solar system?
Jupiter
How many criteria to be a planet does Pluto meet? And which ones?
2 criteria: the first and the third
1 criterion: the first
2 criteria: the first and the second
2 criteria: the second and the third
Can you name all the planets? (in any order)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Criteria for a celestial body to be a planet. THIRD: The area around its _________ should be ______
orbit - clear
Can you name at least two dwarf planets?
Pluto, Eris, Haumea, MakeMake
The dwarf planet Eris is ____________ than Pluto.
bigger
Which is the smallest planet in our solar system?
Mercury
What does the acronym IAU mean?
International Astronomy Union
International Astronomical Union
Italian Astronomical Union
When was Pluto classified as a dwarf planet?
2005
2007
2006
2004
What type of celestial body is Pluto?
Pluto is a dwarf planet
Criteria for a celestial body to be a planet. FIRST: The object should _________ around the ______
Revolve - Sun
What type of celestial body is the Earth?
The Earth is a planet
What type of celestial body is the Sun
The Sun is a star