Subjects
Subscribe
Search Skwirk
Year 9 NSW
»
Science
»
History of science
»
The most important discoveries of human civilisation
Topic : The most important discoveries of human civilisation
In this topic you will learn...
Chapter 1 :
Physics and astronomy
For thousands of years people had only a religious explanation of the origin of the universe
Aristotle proposed that the universe was a sphere with the Earth at the centre
Albert Einstein was the first scientist to discover the relationship between the mass of an object and the energy that it can generate
The Milky Way is a galaxy made up of millions of different stars
The Big Bang is the name given to the astrophysical theory about the origin of our universe
Chapter 2 :
Medicine
Medicine is a branch of science that involves maintaining and restoring human health and wellbeing
A vaccine is a substance which is injected into the human body to increase the body's immunity to disease
Antiseptics are substances which either kill or prevent the growth of microorganisms which cause disease
An x-ray is a type of radiation which can be used in small doses to take images of the inside of a person's body
Chapter 3 :
Biology
Biology is the study of living organisms
A microscope is an optical instrument used to see objects that are too small to be seen by the naked eye
After studying pieces of cork under the microscope, Robert Hook noticed that they were all made up of units that he called cells
According to Darwin's theory of evolution, living organisms change over generations due to natural selection
Chapter 4 :
Chemistry
Chemistry is the study of the elementary particles of matter
Matter is anything that has a mass and occupies a space
Alchemy was a Medieval and ancient practice which combined mysticism and chemistry
A molecule is the smallest structural unit of matter
Atomic Theory stated that all matter is composed of atoms
The periodic table is a chart that lists chemical elements by their atomic number
Chapter 5 :
Geography and geology
Geography is the study of the Earth's surface, its features climate and population
Geology is the study of the Earth structure and chemical composition
Ancient Greeks drew the first proper geographical maps
According to the theory of plate tectonics, the Earth's crust is divided into about 28 large, slowly moving plates, called tectonic plates
According to the law of superposition, the deepest rocks are the oldest
Topic Summary
Audio Summary
Play
|
Download
Text Summary
This topic includes
15 colour images
5 flash animations
4 videos
ToolBox
Increase text size
Print this page
EMPTY?