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WorksheetsGeog1 Unit 1.1 - Earth's Story
Total questions: 13
Worksheet time: 11mins
The Big Bang Theory is the most widely accepted theory about the origin of the universe.
true
false
Which description is considered most accurate regarding what actually happened during the Big Bang?
Two galaxies collided causing an immense explosion as stars crashed into one another
All of what would become the universe was concentrated in a single small point, or singularity, which rapidly expanded.
All matter emerged from a massive black hole at the center of the universe.
Parts of the sun were ripped off by massive internal explosions and were thrown into space where they cooled to become other things, like plants, comets, and other galaxies.
Approximately how many years ago did Earth form?
4.5 trillion years
450,000 years
4.5 million years ago
4.5 billion years ago
Our solar system started off as __________ that collapsed (likely due to an explosion).
a giant mass of rock
a cloud of dust and gas
a tremendous cube of ice
a big ball of fire
Which part of the solar system formed first (before everything else started to clump together)?
the sun
planets
asteroids
comets
After the sun formed, the material left behind started to concentrate into big objects due to gravity. Big objects collided with bigger objects to form larger objects that orbit the sun called __________.
planets
asteroids
comets
moons
3) Where do entrepreneurs want to send people begin a new settlement?
Mars
Mercury
Andromeda
Neptune
What do cosmologist do?
Study Earth
Work in beauty shops
Study the solar system
Study the entire universe.
(a)
How did we first work out that the universe was expanding?
Galaxies were seen to be moving further and further apart.
Galaxies were seen to be spinning in an unexpected way
Particle physics experiments showed that atoms were getting larger as the universe got older
How do particle accelerators allow us to effectively look back in time?
If you accelerate particles to a great enough speed, they travel backwards in time
High energy collisions of particles recreate the hot, dense conditions we think existed at the beginning of the universe
Particle accelerators make wormholes that we can travel through to make measurements of the early universe
Which of these particles is the smallest?
atom
neutron
proton
quark
How long after the Big Bang was it before protons and neutrons could form from quarks?
microseconds
a few seconds
hundreds if seconds
