ASTRONOMY AND SPACE

It is the oldest science and it studies about celestial objects and phenomena.

• Astronomy

• Astronomer

• Architecture

• Archaeology

It is made up of the Sun and all the planets, asteroids, and other objects that orbit the Sun.

• Solar System

• Planetary System

• Oort Cloud

• the Abyss

Which among the following statements is true about our Sun?

• It is a medium sized yellow star.

• It is formed 4.5 billion years ago.

• It is a second-generation star.

• It burns hydrogen and formed from supernova explosion.

• all of these

They are relatively small, composed mostly of rock, and have few or no moons.

• Inner planets

• outer planets

• comet

• asteroids

They are mostly huge, gaseous, ringed, and have many moons.

• inner planets

• outer planets

• comets

• asteroids

What does the symbol above represents?

• dwarf planets

• outer planets

• inner planets

• Sun

What force makes planets and other objects orbit the Sun?

• weak force

• gravitational force

• strong force

• electromagnetic force

The strength of the gravitational force affects the motion of objects within the gravitational field and affected by:

(choose options that applies)

• planetary mass

• distance from the planet

• friction

• electromagnetic force

Which among the following is a dwarf planet?

(choose options that apply)

• Pluto and Ceres

• Eris

• Haaumea

• makemake

These are objects made of ice, dust, and rocks that orbit the sun and they often have a visible "tail" of gas that comes from solar radiation and solar wind.

• asteroids

• moons

• comets

• meteors