Science (physics & biology) Flashcards
Our solar system is part of the _________ galaxy
Milky way
What force causes planets to orbit the sun?
Gravity,Gravitational force
Why is the moon a natrual satellite?
Because it orbits a planet
How are planets and moon simillar?
Their orbits are circular,they do not emit visible light
What is the wood turtle theory?
people believed that the
Earth was supported on the back of
a giant wooden turtle.
What country did the wood turtle theory origionate from?
India
What is the sun being swallowed theory?
People believed that a
solar eclipse occurred when a god
called Rahu swallowed the Sun
Where is the sun being swallowed theory from?
Thailand
What is the flat earth theory?
People believed
that the Earth was flat. It was
supported by 12 pillars
Which two countries was the flat earth theory from?
India,china
What is the geocentric model?
geo means earth and centric means center so the earth is at the center of out universe
What it the name when planets look like the moving backwards from earth?
Retrograde motion
What is a geostationary satalite?
A satellite that stays in one specific point
above the Earth
Give an example of what a geostationary satalite is used for
Brodcasting
What is a polar orbit satalite?
A satelite used to monitor the whole
of the earths surface and changes
in weather/cloud patterns
Give an example on what a polar orbit satalite is used for
Weather forcasting
What is a low earth orbit (leo) satalite?
a satelite used to monitor the whole of the
earths surface
Give an example of a leo satalite
International space station
What is the universe?
The universe holds galaxies which have stars and planets in them
What is thought to be happening to the size of the universe?
It is thought to be expanding everyday
What is the function of the cell membrane?
The cell membrane controls what enters and leaves the cell
What is the function if the cytoplaysm?
The cytoplaysm maintains the cells structure and shape
What is the function of the mitochindria?
mitocondria generates the enegry that is needed to power cells
What is the function of the nucleus?
the nucleus manages the cells genetic material
What is a chromosome?
a chromasone is made up of strands of DNA
which are tightly coiled around protiens
What does DNA stand for?
Deoxyribonucleic acid
What is the structure of DNA?
Double Helix
What is the gamete in a male?
A sperm cell
What is a gamete in a female?
Egg cell
If your female you have _______ chromosomes
XX
If your male you have _______ chromosomes
XY
What is a homozygous allele?
It is when your have a pair of the same allele(e.g FF ff)
What is a hetrozygous allele?
It is when you have two diffirent alleles(e.g Bb)
What is the term for planets outside our solar system?
Exoplanets
