Curriculum
Course: IB Physics HL
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Curriculum

IB Physics HL

Theme A — Space, Time and Motion

0/125 Dr Dabour Hub Science Diagram and Course Material

Theme B — The Particulate Nature of Matter

0/105 Dr Dabour Hub Science Diagram and Course Material

Theme C — Wave Behaviour

0/73 Dr Dabour Hub Science Diagram and Course Material

Theme D — Fields

0/77 Dr Dabour Hub Science Diagram and Course Material

Theme E — Nuclear and Quantum Physics

0/89 Dr Dabour Hub Science Diagram and Course Material

Tools and Inquiry — IB Physics skills

0/43 Dr Dabour Hub Science Diagram and Course Material
Quiz

C.5.3 Galactic Redshift – Check yourself

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  • Questions count: 6
  • Passing grade: B+
  • Time limit: 10 minutes
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1.
Hubble's law states that recession speed is
Inversely proportional to distance
Independent of distance
Proportional to distance
Proportional to distance squared
2.
A galaxy has z = 0.020. Its recession speed is about
6.0 × 105 m s−1
6.0 × 106 m s−1
1.5 × 1010 m s−1
6.0 × 107 m s−1
3.
The expansion pattern means that
Every galaxy sees the others moving away
We are at the centre
Galaxies move through fixed space
The universe has an edge
4.
A galaxy at 100 Mpc recedes at 7000 km s−1. H0 is
700 km s−1 Mpc−1
0.014 km s−1 Mpc−1
7 km s−1 Mpc−1
70 km s−1 Mpc−1
5.
The gradient of a graph of recession speed against distance gives
The age of the universe
The speed of light
The Hubble constant
Redshift
6.
1/H0 approximates
The size of the universe
The age of the universe
The temperature of the universe
The speed of light
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Part of Theme C — Wave Behaviour — see every lesson and quiz in this unit.
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