iGCSE Space Physics

When the Moon is directly between the Sun and the Earth, what phase would the Moon be in?

• Full Moon

• New Moon

• Half Moon

• Waxing Crescent

What evidence from the text supports why the Moon seems to change shape from night to night?

• The Moon shines on Earth differently depending on the weather.

• As the Moon travels around Earth, its distance from Earth changes.

• The moonlight hits Earth at different places depending on the time of day.

• As the Moon travels around Earth, sunlight hits it from different directions.

Which of the following forms a star?

• Nebulae

• Supernova

• White dwarf

• Black hole

Which of the following characteristics can be used to classify stars?

I Age

II Shape

III Brightness

IV Colour

• I and II

• III and IV

• II and III

• I and IV

What shape are the orbits of comets?

• Rectangular

• Irregular

• Elliptical

• Circle

What is a comet?

• An object that orbits the Earth, made from rocky material, dust and ice

• An object that orbits the Sun, made from rocky material and metals

• An object that orbits the Sun, made from rocky material, dust and ice

• An object that orbits the solar system, made from rocky material and metals

What happens to the gravitational force of attraction between two objects if the distance between them increases?

• Force of attraction increases

• Force of attraction decreases

• Force of attraction remains constant

• Force of attraction cease to exist

When a Red Giant runs out of fuel, it become a:

• Supernova

• Nebula

• White Dwarf

• Main Sequence Star

Which of the following list the correct order of the life cycle of massive stars?

• Nebula --> protostar --> main sequence --> red supergiant --> supernova --> blackhole
• Nebula --> protostar --> main sequence --> red giant --> planetary nebula --> white dwarf --> black dwarf
• Nebula --> protostar --> main sequence --> supernova --> red giant --> blackhole
• Nebula --> protostar --> blackhole --> red supergiant --> supernova --> main sequence

What best describes the doppler effect?

• An apparent change in frequency of a wave due to the relative motion between a wave source and an observer
• When sound changes pitch
• When light changes color
• An apparent change in the amplitude of a wave due to the relative motion between a wave source and an observer.