Curriculum
Course: Igcse Physics
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Curriculum

Igcse Physics

1. Motion, Forces and Energy

0/161 Dr Dabour Hub Science Diagram and Course Material

2. Thermal Physics

0/75 Dr Dabour Hub Science Diagram and Course Material

3. Waves

0/77 Dr Dabour Hub Science Diagram and Course Material

4. Electricity and Magnetism

0/119 Dr Dabour Hub Science Diagram and Course Material

5. Nuclear Physics

0/39 Dr Dabour Hub Science Diagram and Course Material

6. Space Physics

0/47 Dr Dabour Hub Science Diagram and Course Material
Quiz

6.1.3 Formation of the Solar System – Check yourself

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1.
What force pulls the nebula together?
Gravity
Magnetic force
Electrostatic force
Friction
2.
What starts in the core when the protostar becomes a star?
Nuclear fission of uranium
Chemical burning
Nuclear fusion of hydrogen
Radioactive decay of the nebula
3.
Why are the inner planets small and rocky?
They formed first
They are made from asteroids
They are too far from the Sun
Light gases were driven outwards, leaving rock and metal
4.
About how old is the Solar System?
4.6 million years
4.6 billion years
46 million years
13.8 billion years
5.
Why does the collapsing cloud become a rotating disc?
Magnetism
The Sun pushes it
Its spin gets faster as it shrinks
Heat melts it flat
6.
Which observation supports formation from a single disc?
Planets orbit in the same direction in nearly the same plane
Planets orbit in many different directions
All planets are rocky
All planets have moons
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