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In this course you will learn about:
- Archimedes discovery.
- Why some objects float and others sink.
- Buoyant force.
- Archimedes principle.
In this course you will learn about:
These three short online lessons discuss asteroids, comets and meteors.
Patterns and processes of evolution. How evolution and natural selection are reflected in the similarities and differences of organisms.
In this lesson you will learn about:
Density of a solid for a regular shaped body. Definition, meaning and its simple calculation
These two short online tutorials discuss how the earth rotates and then the earth's revolutions.
In the first URL, the YouTube video explains why earth has spring, summer, autumn and winter seasons. The second URL summarizes the key takeaway points.
This online tutorial will explain the earth's shape and its hemispheres.
This online article delves into our the sun and planets were formed.
These four short online lessons will cover the following: