Science quiz reviewer(will be done on thursay)

• Tornado - Is a whirling, funnel-shaped column of air that forms in association with thunderstorms.
• Tropical Cyclones - Are characterized by heavy rains and strong winds that form over warm ocean water.
• Hurricane - When the wind speed reaches 120km/h the storm is called a hurricane. They usually form in the North Atlantic Ocean and in the Northeast Pacific Ocean.
• Tropical Depression - wind velocity of up to 61 km/h.
• Tropical storm - wind velocity of 62 to 88 km/h.
• Severe Tropical storm - wind velocity ranging from 89 to 117 km/h.
• Super Typhoon - wind velocity of more than 220 km/h.
• Thunderstorms - occur when masses of warm moist air near earths surface are rapidly pushed upward into cold dry layers.
• Constellations - groups of stars that appear to form different shapes in the sky.
• Asterisms - groups of stars that form smaller patterns but still belongs to a constellation .
• Examples of asterisms - are Big Dipper and Little Dipper
• Big Dipper - Part of the Ursa Major of Big Bear.
• Little Dipper - Part of Ursa Minor.
• Pointers - The two stars opposite the handle.
• Orions belt - easy to find in the night sky and is best observed from november to february.
• Star trails - The paths the stars take as they seem to move.