Today in our Natural Science class, we learn more things about the nutrition and respiration of plants.
Plants make their own food and in doing so they produce oxygen that send out to the atmosphere. This process is called PHOTOSYNTHESIS. And we know that photosynthesis is vital for life on Earth.
Here you have the two videos we watched so you can learn and enjoy.
We already know that nutrition is a vital function of all living things.
According to their nutrition animals can be dividen into three groups: herbivores, carnivores and omnivores.
In this video you can learn things about these three types of animals.
Enjoy and learn!
We all know that living things carry out three vital functions: nutrition, interaction and reproduction.
Here you have a video that may help you learn a bit more about these life processes or vital functions. Enjoy!!!
Astronomy is that part of science that studies outer space focusing on stars, planets, comets, galaxies and so on.
We know that people started to study Astronomy as far back as in Ancient Mesopotamia. Civilizations such as Ancient Greeks, Romans or the Mayans also studied Astronomy. However all of these scientists had to observe space with just their eyes.
Aristotle, an ancient Greek astronomer, calculated that the Earth was not flat but a sphere. He observed that the Earth's shadow on the Moon was curved and that when a ship appeared on the horizon, we could see the top before the rest of the ship.
Copernicus was an astronomer that lived in the early 1500s. He came up with the idea that the Sun was the centre of the universe. This was a complete different believe from the idea that the Earth was the centre of the universe.
With the invention of the telescope in the early 1600s, scientists were able to see much further objects and were able also to have a better view of the Moon and the planets.
Galileo Galilei began to study Copernicus' work and felt that his observations of the planets were correct and that the Sun was the centre. This believe was really controversial at that time. Galileo heard of the invention of the telescope in Holland and he decided to build his own telescope. Soon Galileo's version of the telescope was used in all Europe.
Galileo made many discoveries using his telescope: the four large moons around Jupiter and the phases of the planet Venus. He also discovered sunspots and that the Moon was covered with craters. As Galileo studied the planets and the Sun he became convinced that the Earth and the other planets orbited the Sun. However the powerful Catholic Church considered his ideas heresy. At first, they sentenced him to life prison but later on they allowed him to live in his house under house arrest.
In Natural Science we are learning new things about living things and we are now learning about the Animal Kingdom.
We have begun with Invertebrates and here you have the two videos that we have seen at school.
The first one is about earthworms, those invertebrates that are so beneficial for the soil. The second one is a general one about invertebrates.
In Social Science we are learning things about our planet, the Earth.
We learnt about the two movements, rotation and revolution, and what they cause.
Here you have the two videos you watched in class so you can watch them as many times as you like and learn more easily.
