Physics and Astronomy - The Planet Mercury

The Planet Mercury

Mercury has a strong ___.

nuclear radiation

X-ray radiation

magnetic field

gamma-radiation

How long is Mercury year?

88 Earth days

12 Earth days

365 Earth days

3 Earth days

Mercury day is ___ Mercury years.

3

0.1

0.5

2

Mercury is hard to see because of ___ .

the moon

the Sun

the stars

the clouds

How many satellites does Mercury have?

2

3

1

0

Mercury solar day is ___ .

one Earth year

365 Earth days

10 Mercury years

176 Earth days

Seventy percent of Mercury is ___ .

metal

gas

salt

water

Mercury is the smallest planet in the Solar System.

FALSE

TRUE

Mercury is the closest planet to the Sun.

FALSE

TRUE

What was the first spacecraft to visit Mercury?

Voyager 1

Phoenix

Viking 2

Mariner 10

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