Which of the following is true about Hawai'i?

• It is a single large island.

• It is one of America's fifty states.

• It is located in the Atlantic Ocean.

• It is a country in the Pacific Ocean.

What does it mean when a volcano is described as 'active'?

• It is extinct and will not erupt again.

• It has erupted recently and may erupt again.

• It is currently erupting.

• It has never erupted.

What is the 'Ring of Fire'?

• A circular chain of islands in the Atlantic Ocean.

• A region with many volcanoes and earthquakes around the Pacific Ocean.

• A type of volcanic eruption.

• A famous volcano in Hawai'i.

What are tectonic plates?

• Large, odd-shaped pieces of Earth's crust that move slowly.

• The outermost layer of a volcano.

• Layers of lava that form islands.

• A type of rock found in Hawai'i.

How fast do tectonic plates move?

• About the speed of a car.

• About the speed of a person's toenails growing.

• About the speed of a running person.

• About the speed of a flying bird.

What is a hot spot in geological terms?

• A type of volcanic eruption.

• A popular tourist destination.

• A location in Earth's mantle that is extremely hot.

• A place where the sun shines the most.

How do islands like Hawai'i form over time?

• By the erosion of large mountains.

• Through the melting of icebergs.

• By the accumulation of lava from volcanic eruptions.

• Through the rapid cooling of ocean water.

What tool do scientists use to detect ground movement?

• Anemometer

• Barometer

• Seismograph

• Thermometer

Why do scientists monitor the gases emitted by volcanoes?

• To help predict when a volcano might erupt.

• To determine the age of the volcano.

• To predict the weather around the volcano.

• To measure the temperature of the lava.

What should people do if a volcano is about to erupt?

• Move to higher ground or indoors, depending on the situation.

• Stay close to the volcano to observe.

• Ignore the warnings and continue daily activities.

• Try to put out the lava with water.