National Geographic: Natural Hazards Name__________________
- What causes avalanches?
- What is the effect of slope?
- How fast do they go?
- List some ways to prevent avalanches.
- About 1500 volcanoes around the world are ___________________.
- Most are found in a band called the ______________________________.
- Most volcanoes are a result of moving _________________ and friction created when they run into each other that causes the plates to ___________________.
- Pompeii was a ____________________ volcano that had a thick/thin (circle one) lava that got stuck and caused the volcano to ___________________.
- Hawaii is on a hot ________________. The volcanoes have thick/thin (circle one) lava and are shield volcanoes, which means they probably won’t _________________.
- List the benefits of volcanoes.
Inside a Volcano
- What saved our planet when the world was covered by snow and ice and the average world temperature was minus fifty degrees Celsius?
- Eventually Earth’s climate _______________________.
- Tsunamis are caused by _________________________ rising from colliding plates.
- In the middle of the ocean, tsunamis move very ____________________. When they near shore, the shallower water causes them to __________________ and ________________, which is what causes damage on land.
- Unlike regular waves, a tsunami wave doesn’t _______________ and break. Instead, it moves ___________________ as much as a mile. It causes more damage, though, when it ____________________, dragging items with it.
- Tsunamis have ___________________ waves, anywhere from 15 to 60 minutes apart.
Earthquake and Tsunami, Japan 2011
- Identify 3 ways that tsunamis are dangerous or cause fatalities.
Hurricanes in Action
- Your thoughts?
Tornado on the Turnpike
- As quickly as it arrives, it _______________________.
How Does A Tornado Form?
- Explain what causes tornadoes to form.
- What place has the most tornadoes in the world?
Inside a Tornado
- How do scientists get inside a tornado?
- What did scientists discover from the probe?
Tornadoes, Lightning in Rare Video
- What do scientists hope to discover in studying hail?
- Why do you think you are safer in a car during a lightning storm?
- Why study lightning?
- Your thoughts?
Earthquake 101: Circle One
- True/False When a stuck fault gives, the released energy passes through the earth in seismic waves.
- True/False Scientists use an instrument called a heliograph to measure seismic waves.
- True/False On average, about 5, 000 people die each year as a result of earthquakes.
- True/False In 1964 a chasm in the ocean floor opened up and swallowed all the water in Valdez harbor.
Earthquakes: The Richter Scale
- When the ground moves 10 times as much, there is ______________ times the energy.
- True/False Each level on the Richter Scale is 10 times as much as the one before it.
- Your thoughts?
Flood News Report
- What is this story about? Do we know what caused it?
- List the ideas for stopping an asteroid to keep it from hitting Earth. Identify the problems with each.
Could We Stop an Asteroid
- What difference does an asteroid’s size make if it hits Earth?
- Why is hard to find asteroids coming toward us? So, how do we find them?
- How do we make it miss? What methods does Bill Nye suggest to change its speed?