Discovery
Video & terminology
Physical Features
Guess again!
100
What were asteroids first called when they were discovered? 
Planets.
100

What does asteroid mean?

Star-like.

100
What other than rocks makes up the asteroid belt?
Ice.
100
Have any spacecraft been lost to the asteroid belt?

Yes or no. 

No. In fact, one space probe missed an asteroid that it was aiming for to collect samples. 
200

What is the name of the group that formed to find the "missing planet" between mars and Jupiter.

The celestial police.

200
Early on in the formation of the asteroid belt, there may have been enough debris to form a planet ___ times the size of earth.
Four.
200
What is the diameter of Ceres?
950 km.
200
What was the most recent spacecraft to pass through the asteroid belt? 

Pioneer 10, Ulysses, juno or New horizons?

Juno.
300
How many members made up the celestial police, and how many degrees of the zodiac did each study in search of the "missing planet"?
The celestial police was made up of 25 members, and each studied 15 degres of the zodiac. 
300
What do scientists think stopped the formation of another planet where the asteroid belt is?
They think that jupiters immense gravity would have destabilised the asteroid and sent them out of their orbit towards the sun or the outer solar system.
300
What are the four asteroids that make up about half the total mass of the belt.

Ceres, Vesta, Pallas, and Hygiea

300

What was the first spacecraft to enter the asteroid belt. 

Voyager 1, galellieo, Pioneer 10 or Pioneer 11?


Pioneer 10. 

400
Why did astronomers think that there was a missing planet between mars and Jupiter?
Because of a mathematical pattern.
400

What are Kirkwood gaps?

Gaps between groups of asteroids that prevent a planet from ever forming.

400
How far is the average distance between asteroids?
966,000 km.
500
What is the name of the Italian man who discovered the first asteroid?

Giuseppe Piazzi

500
What is believed to be the total mass of the asteroid belt today?
About 50% of our moons mass.
500
C-type asteroids make up about _____ % of all asteroids.
75%
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