Moons
Moons

This free course is available to start right now. Review the full course description and key learning outcomes and create an account and enrol if you want a free statement of participation.

Free course

Moons

1.2.12 The crescent Moon seen from the Equator

Activity 2

If phases are inverted in the Southern Hemisphere, compared to the Northern Hemisphere, how do you think waxing and waning crescents will look at the Equator?

Answer

Figure 34 Left: waxing Moon seen after sunset at the Equator. Right: waning Moon seen before sunrise at the Equator.

At the Equator, a waxing crescent will form an ‘n’ shape as it rises, and a ‘u’ shape as it sets. A waning crescent will be the opposite, rising as a ‘u’, and setting as an ‘n’. However, ‘n’ shaped crescents are not visible at the Equator, because the Sun would always be above the horizon in this situation so the sunlight drowns them out. Another way to describe it is that after dark, the crescent Moon never looks unhappy seen from the Equator; it always looks like a smile.

MOONS_1

Take your learning further

Making the decision to study can be a big step, which is why you'll want a trusted University. The Open University has over 40 years’ experience delivering flexible learning and 170,000 students are studying with us right now. Take a look at all Open University courses.

If you are new to university level study, find out more about the types of qualifications we offer, including our entry level Access courses and Certificates.

Not ready for University study then browse over 900 free courses on OpenLearn and sign up to our newsletter to hear about new free courses as they are released.

Every year, thousands of students decide to study with The Open University. With over 120 qualifications, we’ve got the right course for you.

Request an Open University prospectus