The Solar System
What is in the centre of the Solar System
The Sun
A large collection of stars, gas and dust
Galaxy
The big bang theory explains how what began
The universe
A star begins its life in a cloud of gas and dust called a _______
Nebula
What animal has 3 hearts and blue blood
Octopus
These objects orbit planets
Moons
Name of the galaxy we live in
The Milky Way
According to the theory, the universe began in what state
Very hot and very dense
This process releases energy inside stars like the Sun.
Nuclear Fusion
Largest organ in the human body
Skin
Name the planet closest to the sun
Mercury
Type of galaxy in the shape of the milky way
Spiral Galaxy
What is the faint radiation left over from the early universe called
cosmic microwave background radiation
Our sun is best described as
A medium sized star
What ocean is the largest on Earth
Pacific ocean
What force keeps the planets in orbit of the sun
Gravity
Why is the Sun important for life on Earth?
provides light and heat, making life possible
What analogy do we use to explain the expanding universe
Balloon analogy
A star like the Sun will eventually become a red giant and then a ________
White dwarf
Monica, Chandler, Joey, Ross, Rachel Phoebe
List the 8 planets in the solar system in order from the sun
What are the 3 rules for being a planet in the solar system
it must orbit a star,
it must be big enough to have enough gravity to force a spherical shape,
and it must be big enough that its gravity cleared away any objects of a similar size near its orbit.
Name and briefly explain one of the three main pieces of evidence for the Big Bang Theory.
red shift - objects in space are stretched out (expanding) so are shifted to the red light side of the spectrum
cosmic microwave background radiation - faint leftover heat/radiation from the early universe
proporition of elements - there is too much helium, proving that the elements combined in the early universe when it was really hot
A massive star may explode at the end of its life in an event called a _________, this eventually cools to form either a ________ or _______
supernova,
Neutron star / black hole
Ruben Le Waller, RWA