Auroras, sometimes called the Northern LightsAurora Borealis, are lights that are seen in the sky in areas close to the north pole. They occur when solar winds from the sun pass through the Earth's atmosphere. The shape of the lights follows the Earth's magnetic field.
A drought is an extended time where lower than normal amounts of rain falls. During a drought, rivers and lakes can dry up, and many plants and animals die.
A very windy storm without much rain can blow a lot of dirt up off the ground and into the air. This is called a dust storm. Sometimes there is so much dust in the air you cannot see very far at all.
A flood is water covering or submerging land. Floods can happen when it rains faster than the ground can soak up the water or let it run away, or by a rising river that bursts its banks. Floods can also be caused by very high tides or storms that push seawater inland.
Frost happens when something gets cold enough for water in the air to freeze on it. Frosts usually happen overnight, and in the morning there will be small ice crystals covering everything.
Frost can kill many kinds of plants, especially young seedlings.
Hail happens during very cold storms. Hailstones are lumps of ice that fall from the clouds. Hailstones can be quite big, and can do a lot of damage to things they hit.
