CAIE IGCSE Physics Extended 6.2.3.1 Milky Way Is One of Many Billions of Topic Practice

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IGCSE CAIE Physics

1. Motion, forces and energy

1.1 Physical quantities and measurement techniques

1.3 Mass and weight

1.5.1 Effects of forces

1.5.2 Turning effect of forces

1.5.3 Centre of gravity

1.7.3 Energy resources

2. Thermal physics

2.1.1 States of matter

2.1.2 Particle model

2.1.3 Gases and the absolute scale of temperature

2.2.1 Thermal expansion of solids, liquids and gases

2.2.2 Specific heat capacity

2.2.3 Melting, boiling and evaporation

2.3.1 Conduction

2.3.2 Convection

2.3.3 Radiation

2.3.4 Consequences of thermal energy transfer

3.1 General properties of waves

3.2.1 Reflection of light

3.2.2 Refraction of light

3.2.3 Thin lenses

3.2.4 Dispersion of light

3.3 Electromagnetic spectrum

4. Electricity and magnetism

4.1 Simple phenomena of magnetism

4.2.1 Electric charge

4.2.2 Electric current

4.2.3 Electromotive force and potential difference

4.2.4 Resistance

4.2.5 Electrical energy and electrical power

4.3.1 Circuit diagrams and circuit components

4.3.2 Series and parallel circuits

4.3.3 Action and use of circuit components

4.4 Electrical safety

4.5.1 Electromagnetic induction

4.5.2 The a.c. generator

4.5.3 Magnetic effect of a current

4.5.4 Force on a current-carrying conductor

4.5.5 The d.c. motor

4.5.6 The transformer

5. Nuclear physics

5.1.2 The nucleus

5.2.1 Detection of radioactivity

5.2.2 The three types of nuclear emission

5.2.3 Radioactive decay

5.2.4 Half-life

5.2.5 Safety precautions

6. Space physics

6.1.1 The Earth

6.1.2 The Solar System

6.2.1 The Sun as a star

6.2.3 The Universe

6.2.3.1—Milky Way is one of many billions of

6.2.3.2—Redshift as an increase in the

6.2.3.3—Light emitted from distant galaxies

6.2.3.4—Redshift in the light from distant

6.2.3.5—Microwave radiation of a specific

6.2.3.6—The CMBR was produced shortly after

6.2.3.7—Speed v at which a galaxy is moving

6.2.3.8—Distance d of a far galaxy can be

6.2.3.9—Hubble constant H0 as recession speed

6.2.3.10—Current estimate for H0 is 2.2 × 10–18

6.2.3.11—D/v = 1/H0 estimates the age of the

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