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

6.1.7 Elliptical Orbits – Check yourself

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1.
Where is the Sun in a planet's elliptical orbit?
At the centre
On the orbit
At one focus
At both foci
2.
Where is a comet moving fastest?
Closest to the Sun
Furthest from the Sun
Half way between
Its speed is constant
3.
Which orbit is the most elliptical?
The Earth
Halley's comet
Venus
Neptune
4.
As a comet moves away from the Sun, its gravitational potential energy…
Decreases
Stays constant
Becomes zero
Increases
5.
The Sun's gravitational force on a comet is greatest…
At perihelion
At aphelion
Halfway along the orbit
It is always the same
6.
Planetary orbits are best described as…
Highly elongated
Straight lines
Nearly circular ellipses
Spirals
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