Physics P1 GCSE (OCR)

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GCSE Physics Flashcards on Physics P1 GCSE (OCR), created by Usman Rauf on 16/04/2015.
Usman Rauf
Flashcards by Usman Rauf, updated more than 1 year ago More Less
Josh Price
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Usman Rauf
Copied by Usman Rauf almost 9 years ago
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Resource summary

Question Answer
How many planets are there? Eight
What orbits around the sun? Earth Asteroids Dwarf Planets Comets
What do moons orbit? Planets
Order these by size.... Planets, Moons, The Sun, Comets, Asteroids. The Sun Planets Moons Comets Asteroids
How do the motions of planets, comets, asteroids, the sun, and moons differ? -
How long ago was the solar system formed? Five Thousand Million Years Ago
How was the solar system formed? -
What does a galaxy contain? Thousands of Millions of Stars
Arrange these in order of size... Earth Milky Way to Galaxy The Sun The Solar System The Milky Way The Earth's Orbit Sun to Nearest Star Earth The Sun The Earth's Orbit The Solar System The Milky Way Sun to Nearest Star Milky Way to Galaxy
Where does the evidence for the distant stars and galaxies come from? -
What speed does light travel at? 300 000 km/s
What is a light year? The distance travelled by light in one year.
How can the distance of a star be measured using parallax? -
How can the distance of a star be estimated from its relative brightness? -
What interferes with observations of the night sky? Light pollution and other atmospheric conditions (eg. clouds).
Why are there uncertainties about the distances of stars and galaxies? -
What is the source of the sun's energy? -
Where were all chemical elements with atoms heavier than helium made? In stars.
What does the redshift in the light coming from galaxies suggest? -
The ________ a galaxy is, the _______ it is moving _______ from us. Further Faster Away
How does the motion of galaxies suggest that space itself is expanding? -
Order these by age... The Earth The Sun The Universe The Universe The Sun The Earth
How do scientists believe the universe began? With a 'Big Bang'.
Why is the fate of the universe difficult to predict? - Hard to measure large distances involved - Hard to measure the mass of the universe - Hard to study the motion of very distant objects
How do rocks provide evidence for changes in the Earth? -
What would happen if mountains were not continually being formed? Continents would be worn down to sea level.
How can the rock processes seen today account for past changes? -
How can the age of the Earth be estimated? -
Explain Wegner's theory of continental drift. -
What is the evidence for continental drift? -
How does Wegener's theory account for mountain building? -
Why were Wegener's suggestions rejected at the time? - Movement of continents was not detectable - Wegener was not a geologist - Simpler explanations for the same evidence
What is seafloor spreading? -
How much do seafloors spread by each year? A few centimeters.
How can the pattern in the magnetisation of seafloor rocks on either side of the oceanic ridges be explained? -
Where do earthquakes, volcanoes, and mountains generally occur? At the edges of tectonic plates.
How does the movement of tectonic plates cause earthquakes, volcanoes, mountains, and contribute to the rock cycle? -
What types of waves do earthquakes produce? P-Waves (Longitudinal) S-Waves (Transverse)
What are the differences between P-Waves and S-Waves? P-Waves travel through solids and liquids. they travel as compressions. S-Waves travel through solids but not liquids. The material of the Earth moves from side to side as the wave travels along.
How can differences between wave speeds and behavior of P-Waves and S-Waves give evidence for the structure of the Earth? -
Label a diagram of the Earth to show its crust, mantle and core. -
What is a wave? A disturbance, caused by a vibrating source, that transfers energy in the direction that the wave travels, without transferring matter.
What is the frequency of waves? The number of waves each second which are made by the source, or that pass through any particular point?
What is the unit for wave frequency? Hertz (Hz)
What is wavelength? The distance between the corresponding points on two adjacent cycles.
What is amplitude? The distance from the maximum displacement to the undisturbed position.
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