The educational resource shows a visual about fixed stars: today we know that the sun is no more than a star which is near to us. Stars like the sun, which are large gaseous spheres are called fixed stars.

Travel from the universe to the atom

The educational resource shows a visual about the evolution of stars. The visual allows you to have an idea of the main properties of a star during its normal life, that is, not during its birth or its death.

Concept of density

Concept of density. Performing calculations.

Concept of attraction among masses

Concept of density

The educational resource shows a visual about the comets: Comets are small bodies, generally measuring less than 100 km in diameter. They tend to be made principally of ice. When they near the Sun, they exhibit a tail (or coma) for which they are famous.

The educational resource shows a visual about lunar phases: the moon is a rocky sphere about four times smaller than the earth. Its different aspects (as seen from the earth) are known as lunar phases.

The educational resource shows an interactive animation about changes in water: the change from a solid to a liquid is called fusion. The change from a liquid to a gas is called evaporation. When water boils it is called ebullition.

Concept of attraction among masses

Concept of electric attraction. Which explains the interactions among electric charges.

In this teaching unit you will learn: To understand in a qualitative way the notion of relative movement, to a sufficient degree to be able to explain the apparent movement of heavenly bodies as a consequence of the earth's rotation and translation. To explain in terms of these same movements the succession of days and nights and the seasons of the year. To know the components of the solar system and some of its most interesting properties. To understand the analogous nature among the sun and...