Unit 9: Natural Disasters and Succession Test

A violent windstorm that forms a rotating column of air called a vortex is a __.

• Hurricane

• Thunderstorm

• Cyclone

• Tornado

Which one of the following states is part of tornado alley?

• California

• Hawaii

• Florida

• Texas

Over ¾ of all tornado occurrences take place in which country?

• China

• United States

• South Africa

• Australia

Earthquakes generally occur at plate boundaries, where __

• Magnetic pull is greatest

• Stress on rocks is low

• Stress on rocks is greatest

• The most rock is found

The point on the Earth's surface directly above the earthquake focus is called:

• Plate boundary

• Epicenter

• Quake

• Aftershock

Where do hurricanes develop?

• Only in the northern hemisphere

• Near the equator

• In arctic regions

• In mountainous regions

What is the most common type of tornado occurrences (69%)?

• Weak

• Moderate

• Strong

• Violent

Which of the following is the most common phenomena?

• Avalanches

• Thunderstorms

• Tsunamis

• Earthquakes

The development of an ecosystem in an area that has never had a community living within it refers to which of the following:

• Invasive species

• Secondary succession

• Primary succession

• Natural selection

What is an example of a pioneer species?

• Mice

• Lichen

• Oak tree

• Pine tree