The big bang Flashcards
What is the Universe.
The universe is everything. It includes all of space, and all the matter and energy that space contains.
explain the term Galaxy.
a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
explain what the Solar System is.
Our 8 planets that orbit the sun
state the meaning of the word Astronomy.
The scientific study of space.
outline the importance of one named Astronomer.
Edwin Hubble, for whom the Hubble Space Telescope is named, was one of the leading astronomers of the twentieth century. His discovery in the 1920s that countless galaxies exist beyond our own Milky Way galaxy revolutionized our understanding of the universe and our place within it.
State Hubble’s law.
“Galaxies are moving away from each other the farther away from each other. The farther away a galaxy is the faster the galaxy is moving away from us”
Describe the importance of the Hubble Space Telescope.
Hubble takes sharp pictures of objects in the sky such as planets, stars and galaxies. Giving us a new insight and visual idea of what our universe is.
Describe the evolution of the Universe.
- Big Bang an explosion that formed our universe.
- Starting from extremely high density and temperature
- space expanded the universe cooled, and the simplest elements formed.
- Gravity gradually drew matter together to form the first stars and the first galaxies.
state the age of the Universe.
13.7 billion years old
explain how the Big Bang took place.
When the universe began as a tiny, dense, fireball that exploded which them expanded into what we know of today.
name the force that allowed galaxies to form.
Gravity
