Yes.
Yes, that's correct. The photosphere is the visible surface of the Sun, and it extends about 100 times the Earth's diameter. Sunspots are cooler, darker areas on the photosphere that can be larger than Earth itself, with some spanning thousands of kilometers in diameter.
No. Some sunspots are fairly small, compared to the size of the Sun, while some can get pretty big. Sunspots grow, and merge, and a "medium" sized sunspot covers an area larger than the Earth. You can see the daily sunspot number on the web at www.spaceweather.com.
Sunspots are originally thought to be planets. They are darker than the surrounding photo sphere. Sunspots are caused by large magnetic fields
in the earth
The relative temperature of sunspots is lower than the surrounding temperature of the sun's surface. Since we adjust our camera's to the high temperature of the sun the relatively cooler sunspots appear black to us.
Both Venus and Mars are smaller than Earth but larger than Mercury.
Uranus is several times larger than Earth.
larger
The primary affect on the Earth is on our ionosphere
Earth is smaller than Neptune but larger than Venus.
Jupiter, Saturn, Uranus and Neptune are all larger than Earth.
The sun is about a million times larger than the earth. Silly question!