BASIC FACTS ABOUT EARTH QUIZ

How old is the universe?

• 5.45 billion years old

• 7 billion years old

• 13.78 billion years old

• 15 billion years old

What was the first element to come into existence?

• helium

• carbon

• oxygen

• hydrogen

What is the force that makes hydrogen collect into giant spheres in space?

• fusion

• gravity

• magnetism

• drift

What is the process that makes a star?

• gravity

• fusion

• drift

• magnetism

Billions of stars in a disc-shaped formation are called a _____________________________.

• universe

• solar system

• galaxy

• quasar

Where are all the other elements besides hydrogen formed?

• in black holes

• inside dying stars

• in the core of planets

• in the Big Bang

How old is Earth?

• 2.2 billion years old

• 4.54 billion years old

• 7.7 billion years old

• 13.8 billion years old

What do scientists believe is in the center of the planet?

• iron

• helium

• an empty space

• a little moon

What is the most important thing that the movement of the Earth's core does for us?

• it makes a protective magnetic field

• it makes compasses work

• it makes the northern lights

• it makes a wandering magnetic north

Is the North Pole area always positively charged?

• Yes, just like a magnet

• No, the charge switches sometimes in a "polar reversal"