Asteroids

Front

In the diagram of the solar system, where is the big gap that bugged astronomers?

Back

between Mars and Jupiter

Front

Giuseppe Piazzi's discovery, the first known asteroid, was named _____

Back

Ceres

Front

The word 'asteroid' literally means _____

Back

star-like

Front

How many asteroids have been discovered to date? Options: 450, thousands, tens of thousands, hundreds of thousands

Back

hundreds of thousands

Front

In our solar system, there are probably over a million asteroids larger than _____

Back

1 km in size

Front

What percentage of asteroids are carbonaceous, which means they have lots of carbon in them?

Back

75%

Front

One sixth of the asteroids are silicon-based rock, and are called _____

Back

silicaceous

Front

So many asteroids orbit the sun between Mars and Jupiter that this region is now called _____

Back

the main belt

Front

Asteroid deserts, or gaps in the main belt, are a result of _____

Back

tugs from Jupiter's gravity

Front

On average, how far apart are decent-sized asteroids? Options: dozens of kilometers apart, hundreds of kilometers apart, thousands of kilometers apart, millions of kilometers apart

Back

millions of kilometers apart