PREMIUM LOGIN

ClassTools Premium membership gives access to all templates, no advertisements, personal branding and other benefits!

Username:    
Password:    
Submit Cancel

 

Not a member? JOIN NOW!  

QR Challenge: Volcanoes

QuestionAnswer
1. Volcanoes can cause...(a) Global cooling / (b) Earthquakes / (c) Release of poisonous gases / (d) All of these 'D' ALL OF THESE - Volcanoes can cool the planet by pumping large amounts of ash and dust into the atmosphere. That dust blocks the incoming sunlight and cools the surface.
2. True or False - All volcanoes are found above ground. FALSE - Most volcanoes are below the surface of the ocean. Of those underwater volcanoes, many are very small and under one-half mile high.
3. Dust and ash from a volcanic eruption can be carried... AROUND THE WORLD - There is no limit to the distance. Heavier particles like rocks fall very close to the volcano.
4. True or False - Scientists can predict volcanic eruptions? FALSE - Scientists are not yet able to predict a volcanic eruption with certainty. There are clues that a volcano will erupt such as earthquakes and small eruptions. Scientists can also look at the history of the volcano to guess a period when it will erupt.
5. Which of these choices is NOT a type of volcano? (a) Shield / (b) Composite / (c) Cinder Cone / (d) Macarena. 'D' THE MACARENA - The Macarena is a dance. Shield, composite, and cinder cones are all types of volcanoes. Composite volcanoes are some of the largest on the planet.
6. True or False - The tallest volcanoes are composite volcanoes. TRUE - Composite volcanoes are the largest on Earth. Mountains like Fuji in Japan and Rainier in the United States are both composite volcanoes.
7. Hot lava of volcanoes can mix with water to create a... (a) Strombolian Explosion / (b) Steam explosion / (c) Base surge? STEAM EXPLOSION - When lava mixes with water, the water turns to steam. The steam can create huge amounts of pressure and wind up as steam explosions near volcanoes that are close to water.
8. True or False - Many volcanoes are less than a half-mile tall? TRUE - Most volcanoes at the bottom of the oceans are very small. Most are less than one-half mile tall.
9. True or False - A volcanic explosion can create winds faster than those found in a hurricane can? TRUE - Volcanic eruptions and explosions can be the most powerful forces on Earth. The winds created by an explosion can be over 100 miles per hour. The winds do not remain at high speeds after the eruption. It's like a sneeze... Really fast and then nothing.
10. True or False - Lava flows can never be stopped. FALSE - Some lava flows have been stopped by people. One of the more successful methods was spraying water on the lava to cool it and make it stop. If a lava flow is big enough, nothing can stop it.

Back