Y9 6.3-6.4 Workbook Moon Formation and Nebulae

Which is the correct order?

• D B A C

• A B C D

• C A B D

• D B C A

• A D B C

The collision theory for the formation of the Moon describes an object the same size as Mars. What was this object?

• An asteroid

• A newly formed star

• A newly formed planet

• A comet from outside the solar system

• A planet from another solar system

Which arrow shows the time of the formation of the Moon according to collision theory?

Another theory for the formation of the Moon is Fission theory. The fission theory suggest the Earth and Moon were once the same object and then split into two soon after formation. Which pieces of evidence could support BOTH fission and collision theory.

• The composition of rocks on the Moon is very similar to that on Earth

• The moon is smaller than the Earth

• The Earth only has one moon and some other plants have more than one Moon

• The moons of Mars were originally asteroids.

A different theory for the origin of the Moon is called the capture theory. The capture theory suggests that:

• 1. the Moon was an object that was formed separately and far away from Earth

• 2. This object was passing close by Earth

• 3. The object was attracted by the gravity of Earth

• 4. The object remained in orbit around Earth

Which of the following supports collision theory but contradicts capture theory?

• The composition of rocks on the Earth

  and the Moon are very similar.

• The moon is orbiting the Earth and is slowly moving away 4cm per year

• The moon is able to perfectly eclipse the Sun

• Other moons seem to be captured from asteroids for other planets

Which statements about nebulae are true? Tick all correct statements

• All nebulae contain dust and gas

• All nebulae act as stellar nurseries

• All nebulae are different shapes

• All nebulae are bigger than the Milky Way galaxy

Type the gas that is most commonly found in nebulae.

Select the TYPE of nebulae that emit their own light.

• emission nebula

• dark nebula

• reflection nebula

• supernova remnant

Name one example of a nebula that does not emit its own light. You do not need to include the word nebula in your answer.

Type one type of nebula that could act as a stellar nursery.