The Universe
What does the theory of the Big Bang suggest?
It suggests that the universe started as a tiny, incredibly hot and dense point around 13.8 billion years ago, and it has been expanding ever since
What are the main two pieces of evidence that support the big bang?
Red shift & Cosmic microwave background
What main factor does the lifecycle of a star depend on?
The movement of what causes Earthquakes
tectonic plates
What are the four spheres?
Atmosphere, hydrosphere, lithosphere, geo/biosphere
What is the largest organ in the human body?
Skin
What is the heliocentric model of the universe?
What is the name of the alternate theory to the Big Bang?
Steady state theory
Are there more medium mass stars or high mass stars in the universe?
medium mass
What are also referred to as a star nurseries?
nebulae
Name three causes of the greenhouse effect
burning fossil fuels, deforestation, agriculture
What animal is Free Willy?
Orca
What is the Geocentric model of the universe?
The belief that the Sun, Moon, planets, and stars —
orbited the Earth in perfect circles
What does the red shift tell us about the universe?
Tells us that the universe is constantly expanding
What do stars begin as?
Nebulae - clouds of gas and dust
How much of Earth's water is saltwater?
97%
What are the processes by which humans and plants eliminate water?
respiration/perspiration and transpiration
How many elements are on the periodic table?
118
What existed before the big bang?
A singularity - an extremely hot and dense point
Explain the steady state theory
- universe is infinite in extent and has always existed in roughly the same form observed today
- the universe is still expanding, but new matter is constantly created to keep the overall density of the universe constant
What part of the life cycle does a star spend the most time as?
Main sequence
What is the composition of a main sequence star?
What are the steps to the nitrogen life cycle
Fixation, Nitrification, Ammonification, Dentitrification
“I woke to the sound of a mosquito whining in my left ear”, begins 2000’s Fever 1793, about an epidemic of what disease?
Yellow fever
Who coined the heliocentric model of the universe?
Nicolaus Copernicus
What is cosmic microwave background?
Leftover radiation/heat from the Big bang
What are the two remnants of a high mass star?
Neutron star & black hole
Where are most living things found? (metres below/above surface)
300m above and 10m below
Name 2 natural factors and 2 anthropogenic factors that affect the water cycle
Temperature Topography Vegetation
Deforestation Urbanisation Climate change
What is the only continent without any active volcanoes?
Australia
Who coined the geocentric model of the universe?
Claudius Ptolemy
Who discovered red shift?
Hubble
What are the two remnants of a medium mass star?
white dwarf & black dwarf
What is the main difference between the big bang theory and the steady state theory?
Big Bang has a point of origin, steady state assumes the universe always existed
Name a way in which all of the four spheres are connected
multiple answers
It’s the only island whose territory makes up parts of 3 different independent nations
Borneo
What is the correct star life cycle?
nebula-protostar-main sequence star-red giant/red supergiant-planetary nebula/supernova-black hole and neutron star/white dwarf and black dwarf
What is the gas composition of the atmosphere?
78% nitrogen, 21% oxygen, 0.04% carbon dioxide, and small amount of others
What word for a friend comes from the Latin for “with whom you would eat bread
Companion
In what 1961 movie does Audrey Hepburn had a cat with no name
Breakfast at Tiffany's