Checking the content (7th grade) -unit 1

Earth has got a central core, a rocky mantle and....

• a liquid crust

• hard surface

• solid crust

• icy crust

Scientists believe that Earth's oceans and atmosphere appeared 4 billion years ago

• True

• False

After the Big Bang our planet looked in the same way as now:

• False

• True

After the Big Bang the remnants of the explosion combined with

• other solid material

• other clouds of gas

• other planets

• other commets

The universe is made of solar systems, galaxies, stars, planets.

• False

• True

What is the meaning of the word "cluster"?

• gabalas

• kieta medžiaga

• grupė

How much time did it take to cool down for Earth?

• a few years

• a few decades

• over millions of years

• a couple of months

What is the meaning of the words "terrestrial planets"?

• teritorinės planetos

• sausumos/žemės planetos

• trajektorinės planetos

After the explosion the temperature in the universe was very hot

• False

• True