Which is the largest planet in our solar system?
Jupiter
Which is the smallest planet in our solar system?
Mercury
How many planets are there in our solar system?
8
Can you name all the planets? (in any order)
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
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
When was Pluto discovered?
1930
1940
1945
1935
Who discovered Pluto?
The American astronomer Clyde Tombaugh
The British scientist Isaac Newton
The Italian astronomer Galileo Galilei
What does the acronym IAU mean?
International Astronomical Union
Italian Astronomical Union
International Astronomy Union
Criteria for a celestial body to be a planet. FIRST: The object should _________ around the ______
Revolve - Sun
Criteria for a celestial body to be a planet. SECOND: The object should be __________ in shape
spherical
Criteria for a celestial body to be a planet. THIRD: The area around its _________ should be ______
orbit - clear
How many criteria to be a planet does Pluto meet? And which ones?
1 criterion: the first
2 criteria: the first and the third
2 criteria: the first and the second
2 criteria: the second and the third
What type of celestial body is Pluto?
Pluto is a dwarf planet
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
