Earth, Sun and Moon_1

What is astronomy?

• The study of celestial objects

• The study of plants

• The study of weather patterns

• The study of ocean currents

What is the Solar System made up of?

• Planets only

• Moons and comets

• Dust and gas

• Stars and galaxies

What is unique about Earth compared to other planets?

• It has liquid water

• It has a thick atmosphere

• It has a large moon

• It has rings

What percentage of the Earth's atmosphere is nitrogen?

• 78%

• 21%

• 1%

• 50%

What is responsible for most of the erosion and weathering of the Earth's continents?

• Water

• Wind

• Ice

• Volcanic activity

What is the process by which the Solar System evolved?

• Collapse of a giant cloud of dust and gas

• Formation of a small star

• Orbiting of planets around the sun

• Formation of comets and asteroids

What is the Solar System made up of?

• Planets, moons, comets, asteroids, satellites of other planets, dust and gas

• Stars, comets, asteroids, satellites of other planets, dust and gas

• Planets, moons, stars, comets, asteroids, dust and gas

• Planets, moons, comets, asteroids, satellites of other planets

What is the fixed path called on which planets revolve around the sun?

• Orbit

• Axis

• Rotation

• Revolution

How did the Solar System evolve according to scientists?

• From a giant cloud of dust and gas

• From a giant cloud of stars and gas

• From a giant cloud of planets and gas

• From a giant cloud of moons and gas

What is the centre of the spinning giant cloud of dust and gas called?

• Star

• Planet

• Moon

• Comet