Introduction to the Solar System

Vocabulary flashcards covering key terms related to the solar system, including definitions and explanations.

Solar System

The system comprising the sun and surrounding celestial bodies including planets and their moons.

Sunspots

Dark spots on the sun's surface that are cooler areas linked to disruptions in the sun's magnetic field.

Solar Flares

Massive bursts of solar wind and radiation from the sun's surface, often related to sunspot activity.

Solar Wind

A stream of charged particles released from the upper atmosphere of the sun.

Magnetosphere

The region around the Earth where its magnetic field deflects solar wind.

Auroras

Natural light displays in the sky caused by solar wind interacting with Earth's magnetic field.

Terrestrial Planets

Rocky planets that are Earth-like in composition, including Mercury, Venus, Earth, and Mars.

Jovian Planets

Gas giant planets that are primarily composed of hydrogen and helium, including Jupiter, Saturn, Uranus, and Neptune.

Dwarf Planet

Celestial bodies in orbit around the sun that are not large enough to be classified as full planets, such as Pluto.

Sunspot Cycle

The approximate eleven-year cycle during which the number of sunspots on the sun increases and decreases.

Heliosphere

The region of space influenced by the solar wind emitted by the sun.

Galilean Moons

The four largest moons of Jupiter discovered by Galileo, which include Io, Europa, Ganymede, and Callisto.

Plasma State

A state of matter where gases are energized to the point that some of the electrons break free from their atoms.