Sinkholes and Earthquakes!
What is an earthquake?
An earthquake is an intense shaking of Earth's surface. The shaking is caused by movements in Earth's outermost layer.
What is the difference between lava and magma?
Magma is liquid rock inside a volcano. Lava is liquid rock (magma) that flows out of a volcano.
What is a tornado and where can it form?
A narrow, violently rotating column of air that extends from a thunderstorm to the ground. It can form on land or sea.
What is a tsunami?
Tsunamis are giant waves
Name a technology used to warning people about Tornados
Tornado Sirens, social media, local radio or news
What is a sinkhole?
A sinkhole is a depression or hole in the ground caused by some form of collapse of the surface layer.
What year was Canberra devestated by the fire tornado?
2003
What is a cyclone and where can it form?
are low pressure systems that form over warm tropical waters.
What does the word tsunami mean?
harbor wave
Name a technology used to learn more about volcanos
3D imaging, drone and satelite footage, infrasound monitoring, monitoring seismic activity
What causes an earthquake?
When tectonic plates move apart, collide, or slide past each other.
What are the 4 main ways bushfires start in Australia?
1. Car accidents that cause fires
2. Careless people, throwing cigerettes in bushes, or leaving campfires burning or not putting out embers
3. Lightning strikes set fire to grass and trees
4. Fires lit for back burning that get out of control
What is hurricane?
Cyclones with wind speeds of at least 119 kilometers (74 miles) per hour.
What is a flood?
A flood is an overflow of water that submerges land that is usually dry
Name a technology used to prevent damage during an earthquake
Pendulums, carbon fibre suspension cables, shock absorbers
What causes a sinkhole?
When water erodes an underlying rock layer, or if the rock is limestone, salt beds, or carbonate rock, which can naturally dissolve by groundwater circulating through them.
How are volcanoes formed?
Volcanoes are formed when magma from within the Earth’s upper mantle works its way to the surface. At the surface, it erupts to form lava flows and ash deposits. Over time as the volcano continues to erupt, it will get bigger and bigger.
How is a tornado formed?
Tornadoes form when warm, humid air collides with cold, dry air. The denser cold air is pushed over the warm air, usually producing thunderstorms. The warm air rises through the colder air, causing an updraft. The updraft will begin to rotate if winds vary sharply in speed or direction.
What was the largest recorded tsunami?
Lituya Bay, Alaska, July 9, 1958
Name a technology used to identify and warn people of tsunamis
Deep-ocean tsunami detection (DART) bouys,
ALL PLAY! (Closest without going over!)
How many magnitude 5.0 or above earthquakes have there been recorded in 2022? (so far)
983
ALL PLAY! (Closest without going over!)
How many people died during the 2021–22 Australian bushfire season?
How many building were destroyed during the 2021–22 Australian bushfire season?
1 person died
6 buildings were destroyed
ALL PLAY!
Name a movie where a cyclone, tornado or hurricane is it?
Varies
ALL PLAY!
What was the size of the tsunami that hit Port Kembla in Feburary?
40cm
ALL PLAY!
How often do satellites take pictures of Earth?
in seconds or minutes (closest without going over!)
Every 10 minutes