Group-1:Earth's Story: From fire to Glory

How was Earth formed?

• From a huge water balloon

• From a big explosion called the Big Bang

• From a giant ice cube

• From a giant rock

What created Earth's magnetic field?

• The sun's heat

• Space rocks

• Movements in the outer core

• The Moon's pull

How did Earth get its water?

• From plants

• From rain clouds

• From comets and asteroids

• From oceans freezing

What is the giant impact hypothesis about?

• How the Earth got its water

• How Earth got its magnetic field

• How the Moon was formed

• How dinosaurs lived

What did cyanobacteria release into the oceans?

• Carbon dioxide

• Oxygen

• Hydrogen

• Methane

What happened during the Great Oxygenation Event?

• The Moon crashed

• Dinosaurs appeared

• Earth froze

• Oxygen filled the air

What was the Cambrian Explosion?

• A time when Earth was very cold

• A time when many new animals appeared

• A time when life became very simple

• A time when dinosaurs ruled

What caused the dinosaurs to go extinct?

• A volcanic eruption

• A new ice age

• A big flood

• A giant asteroid crash

What did mammals do after the dinosaurs went extinct?

• They stayed the same size

• They became smaller

• They disappeared

• They grew bigger

What did early humans learn to control?

• Fire

• Plants

• Water

• Animals