Volcanoes Unleashed
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Questions and Answers

During which season do bushfires usually happen in Australia?

  • Autumn
  • Winter
  • Spring
  • Summer (correct)

What can cause bushfires in Australia?

  • Tornadoes
  • Lightning strikes (correct)
  • Volcanic eruptions
  • Earthquakes

What should people have ready in case of a bushfire?

  • Picnic basket
  • First aid kit
  • Emergency kit (correct)
  • Toolbox

Which type of volcano is formed by explosive eruptions that eject small pieces of lava into the air?

<p>Cinder cone volcanoes (C)</p> Signup and view all the answers

What is the main cause of floods in Australia?

<p>Tropical cyclones (A)</p> Signup and view all the answers

What is the temperature that lava can reach during a volcanic eruption?

<p>1,100 degrees Celsius (B)</p> Signup and view all the answers

What positive impact can floods have on the environment?

<p>Filling up dams (B)</p> Signup and view all the answers

Which natural events can cause tsunamis?

<p>All of the above (D)</p> Signup and view all the answers

What happens when a tsunami reaches shallow water near the shore?

<p>It grows taller (B)</p> Signup and view all the answers

Why are tsunamis hardly noticeable out in the deep sea?

<p>They are masked by other waves (D)</p> Signup and view all the answers

What is the first sign of a tsunami?

<p>The water pulling back from the shoreline (B)</p> Signup and view all the answers

Which of the following is a warning sign of a tsunami?

<p>The ground shaking (D)</p> Signup and view all the answers

What happens to a tsunami as it approaches the coastline?

<p>It grows taller (D)</p> Signup and view all the answers

Why is it crucial for people who live near the ocean to be prepared for a tsunami?

<p>Tsunamis can cause flooding (B)</p> Signup and view all the answers

What causes a tsunami to form?

<p>A sudden movement of the Earth's crust under the sea (B)</p> Signup and view all the answers

Which of the following is true about tectonic plates?

<p>They are constantly moving, although very slowly (C)</p> Signup and view all the answers

What happens when two tectonic plates collide?

<p>They create mountains (D)</p> Signup and view all the answers

What causes the formation of volcanoes?

<p>The eruption of magma onto the Earth's surface (B)</p> Signup and view all the answers

What is the Richter scale used to measure?

<p>The strength and duration of seismic waves (C)</p> Signup and view all the answers

During which seasons do bushfires usually happen in Australia?

<p>Spring and summer (B)</p> Signup and view all the answers

What is the purpose of an emergency kit during a bushfire?

<p>To help people be prepared (B)</p> Signup and view all the answers

What causes most bushfires in Australia?

<p>Both lightning strikes and human causes (A)</p> Signup and view all the answers

What do firefighters use to put out bushfires?

<p>Both special equipment and helicopters (C)</p> Signup and view all the answers

What is the main reason why bushfires spread quickly in Australia?

<p>Both hot weather and strong winds (C)</p> Signup and view all the answers

What happens to the land after a bushfire?

<p>Both plants and trees need to grow again and animals need to find new homes (C)</p> Signup and view all the answers

Which of the following is NOT a type of volcano mentioned in the text?

<p>Magma volcanoes (B)</p> Signup and view all the answers

What is the main cause of volcanic eruptions?

<p>Pressure from magma (A)</p> Signup and view all the answers

What temperature can lava reach during a volcanic eruption?

<p>1,200 degrees Celsius (A)</p> Signup and view all the answers

What are the positive effects of volcanic eruptions?

<p>Enriching the soil (C)</p> Signup and view all the answers

What is one of the main causes of floods in Australia?

<p>Tropical cyclones (D)</p> Signup and view all the answers

What are the negative impacts of floods?

<p>Destroying homes and buildings (D)</p> Signup and view all the answers

Which of the following is NOT a warning sign of a tsunami?

<p>The ocean appearing calm and still (B)</p> Signup and view all the answers

What happens when a tsunami reaches shallow water near the shore?

<p>It grows taller and crashes onto the land (A)</p> Signup and view all the answers

What causes tsunamis to form?

<p>All of the above (D)</p> Signup and view all the answers

Why is it crucial for people who live near the ocean to be prepared for a tsunami?

<p>Tsunamis can cause devastating flooding (A)</p> Signup and view all the answers

What happens to a tsunami as it approaches the coastline?

<p>It grows taller and crashes onto the land (D)</p> Signup and view all the answers

What is the first sign of a tsunami?

<p>The water pulling back strangely (D)</p> Signup and view all the answers

Which of the following best describes the impact of a tsunami when it reaches shallow water near the shore?

<p>It grows taller and crashes onto the land (D)</p> Signup and view all the answers

What is the main cause of tsunamis?

<p>All of the above (D)</p> Signup and view all the answers

Why are tsunamis hardly noticeable out in the deep sea?

<p>Ships sailing far from the coast rarely feel them (C)</p> Signup and view all the answers

What is the first sign of a tsunami?

<p>The water pulling back strangely (D)</p> Signup and view all the answers

What can cause damage and danger to communities during floods?

<p>The impact of floods (B)</p> Signup and view all the answers

What should people do if they hear the warning signs of a tsunami?

<p>Follow the guidance of adults and head to higher ground immediately (C)</p> Signup and view all the answers

Which of the following is true about tectonic plates?

<p>Tectonic plates are constantly moving, although very slowly. (C)</p> Signup and view all the answers

What causes the formation of mountains when tectonic plates collide?

<p>The crashing of tectonic plates together. (A)</p> Signup and view all the answers

What is the main cause of earthquakes?

<p>The movement of tectonic plates. (A)</p> Signup and view all the answers

What is the strength of an earthquake measured by?

<p>The Richter scale. (D)</p> Signup and view all the answers

What natural disasters can be triggered by earthquakes?

<p>Tsunamis and landslides. (A)</p> Signup and view all the answers

How do scientists determine the location and magnitude of an earthquake?

<p>By using seismographs to measure the strength and duration of seismic waves. (A)</p> Signup and view all the answers

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