National Geographic: Planets

The Light of planets is made when they_____

• reflect light from Stars

• cause tiny explosions by turning space dust into vapor

• heat gases to release energy

• slowly expand in size, which produces energy that gives off light

Mercury, Venus, Earth, and Mars are closet to the Sun and are_________

• known to be the youngest planets

• made of rock and metal

• often called "morning stars"

• less dense than the outer planets

The Planets that are known as the gas giants all have________.

• rings made mostly of ice and dust

• three orbiting moons made of gas

• atmospheres that are mostly oxygen

• inner cores made up of different metals

What is the Great Red Spot on Jupiter?

• the crater of a volcano that has been erupting for over 200 years

• a hurricane that has been blowing for more than 400 years

• a hole, 400 yards wide, on the planets surface

• a could of red gas that covers over 100 square miles

What is true about Earth's moon?

• it travels in reverse orbit to the Sun.

• Dwarf planets circle it

• it is larger than Neptune's moon Titan.

• It has no weather