Physics topic 3

taylor2em
Flashcards by , created about 6 years ago

GCSE Physics Flashcards on Physics topic 3, created by taylor2em on 05/30/2013.

121
0
0
Tags
taylor2em
Created by taylor2em about 6 years ago
P2a revision (part 1)
juliasutton
GCSE AQA Physics - Unit 3
James Jolliffe
AQA Physics P1 Quiz
Bella Statham
Describe - Practice questions and answers for AS Physics A
nikeishabk
Whole Number Glossary L1
Lee Holness
Forces and motion
Catarina Borges
P2 Radioactivity and Stars
dfreeman
Physics P1
themomentisover
Physics: Energy resources and energy transfer
katgads
OCR Physics P2 revision cards
Alex Howard
Question Answer
What are the problems with using telescopes? Light pollution from streets lamps, Air pollution such as dust particles reflect and absorb light
Why can we learn more about the universe as telescopes improve? Improves magnification, so we can see further into space Improves detail and quality Allows photos to be taken, so you can analysis over time and see the change
What is a spectrometer? A tool used to analyse the light given out by stars and galaxies
What is the LIFE-CYCLE of a star 1) stars form from clouds of gas called NEBULAS 2) the force of gravity pulls the cloud of dust together 3) due to a temperature increase, hydrogen nuclei join together to form helium nuclei........ A lot of energy is given out- A star is born! 4) Eventually, the hydrogen in the core begins to run out, forming a RED GIANT 5) lastly, the star become unstable, it throws out a layer of dust and gas , so this leaves behind a hot, dense solid core , which cools down to form a WHITE DWARF (that's me :0 how rude)
What are the TWO pieces of evidence for the Big Bang Theory, CMB radiation, and Red-shift
What is red shift? Light from distant galaxies are moving away from us, it supports the big band theory by showing the whole universe is expanding
What are the two theory's of how the universe was created called? The steady state theory and the big bang theory
What does cmb radiation stand for? Cosmic microwave background radiation
Note: Scientists have detected low frequency electromagnetic radiation coming from.........turn over Of the universe.....ooooooh
What is the most accepted theory? The Big Bang theory
What is the smallest planet (not including Pluto) Mercury
What is the biggest planet? Jupiter
Which planet is furthest away from the sun? Neptune
What is the name of our galaxy The Milky Way.....I'm hungry now! ;)
What is a galaxy? Group of stars
What does SETI stand for? Search for ExtraTerrestrial Inteligence
What do scientists look for from outer space when searching for aliens? Radio signals
What do space landers do? Collect data about conditions ie.tempurature, take photos, collect soil/rocks