At the end of this unit
in terms of scientific enquiry
most pupils will: use a model of gravitational attraction to explain orbiting; describe how ideas of the nature of the solar system have changed over time and relate these to available evidence; make effective use of secondary sources to find information from recent space exploration about the nature of the solar system
some pupils will not have made so much progress and will:
describe some early ideas about the solar system
some pupils will have progressed further and will:
explain how experimental evidence has led to changes over time in models of the solar system; evaluate recent information and ideas about the origin of the Moon
in terms of physical processes
most pupils will: recognise that gravity is a universal force of attraction between objects and that this force depends on their masses and distance apart; describe how weight is different on different planets; give examples of the use of artificial satellites
some pupils will not have made so much progress and will: recognise that weight is less on the Moon; describe gravity as a force which acts throughout the solar system; give examples of the use of artificial satellites
some pupils will have progressed further and will:
use data to compare gravity on different planets; describe how the forces on rockets or satellites vary as they travel away from the Earth
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