Q 01/05

Where does Jupiter rank in distance from the Sun?

A) Fourth

B) Fifth

C) Third

D) Sixth

Answer · why

B) Fifth

It is the first of the giant planets beyond the asteroid belt.

Q 02/05

Jupiter's mass is roughly how many times that of Earth?

A) 17

B) 60

C) 95

D) 318

Answer · why

D) 318

That is nearly 2.5 times the mass of all the other planets combined, yet still less than a thousandth of the Sun.

Q 03/05

Jupiter's diameter is about how many times Earth's?

A) 2

B) 4

C) 9

D) 11

Answer · why

D) 11

It is also about a tenth the diameter of the Sun.

Q 04/05

How long does Jupiter take to orbit the Sun?

A) About 11.9 years

B) About 4.6 years

C) About 29.5 years

D) About 84 years

Answer · why

A) About 11.9 years

The Chinese built their twelve-year cycle of earthly branches on this near-12-year orbit.

Q 05/05

Roughly how long is a day on Jupiter?

A) About 24 hours

B) About 17 hours

C) About 10 hours

D) About 3 days

Answer · why

C) About 10 hours

It is the fastest-spinning planet, which flattens it into an oblate spheroid 7% wider at the equator.