The sunspot cycle was discovered by Newton in 1843.
The sunspot cycle was discovered by Galileo Galilei in 1843.
The sunspot cycle was discovered by Heinrich Schwabe in 1843.

2) Which statement is false?

Sunspots have very strong magnetic fields.
Sunspots are much hotter than the surrounding areas on the Sun.
The Earth's magnetic field protects us from the solar wind.

3) Which statement is the most correct?

The Sun makes up over 10% of the mass of the solar system.
The Sun makes up over 50% of the mass of the solar system.
The Sun makes up over 99% of the mass of the solar system.

4) The Sun can be classified as a yellow dwarf star.

Correct
Incorrect

5) When the Sun is totally burned up, it will ...

become a white dwarf star
explode in a spectacular way - be a supernova
become a black hole

6) Just over 50% of the Sun's total heat and energy reaches the Earth.

True
False

7) Did the Ulysses, Voyager 1 and the Pioneer Venus Orbiter spacecrafts all study the Sun as part of their missions?

Yes
No

8) Pick the correct statement:

The temperature of the Sun is 15,000 K at its centre
The temperature of the Sun is 15,000,000 K at its centre
The temperature of the Sun is 15,000,000,000 K at its centre

9) The temperature of the photosphere is 5,800 K.

Correct
Not correct

10) How is energy in the Sun produced?

During the conversion of hydrogen atoms into helium atoms.
During the conversion of helium atoms into hydrogen atoms.