What students learn in AC9S7U03
This unit helps students build a clear, usable understanding of Model cyclic changes in the relative positions of the Earth.... The goal is not to memorise one answer pattern. Students should be able to explain the idea, recognise it in a new example and apply it in a short practice or worksheet task.
- Start with the main idea: model cyclic changes in the relative positions of the Earth, sun and moon and explain how these cycles cause eclipses and influence predictable phenomena on Earth, including seasons and tides.
- Use concrete examples, pictures, oral explanation and short written responses before moving to independent practice.
- using physical models or virtual simulations to explain how Earth’s tilt and position relative to the sun causes differences in light intensity on Earth’s surface, resulting in seasons examining the effect of the gravitational attraction of the moon and the sun on Earth's oceans and describing how the relative positions of the moon and sun with respect to Earth result in tidal variations
- Finish with mixed questions so students must choose the correct strategy rather than copy the last example.
Curriculum coverage and elaborations
The content description and elaborations below show the curriculum ideas taught in this unit. Items marked as teaching context support lesson planning but may not appear in the initial eight-question activity.
- Content description: model cyclic changes in the relative positions of the Earth, sun and moon and explain how these cycles cause eclipses and influence predictable phenomena on Earth, including seasons and tides
- E1: using physical models or virtual simulations to explain how Earth’s tilt and position relative to the sun causes differences in light intensity on Earth’s surface, resulting in seasons
- E2: examining the effect of the gravitational attraction of the moon and the sun on Earth's oceans and describing how the relative positions of the moon and sun with respect to Earth result in tidal variations
- E3: using physical models or virtual simulations to explain the cyclic patterns of lunar phases and eclipses of the sun and moon
- E4: researching knowledges held by First Nations Australians regarding the phases of the moon and the connection between the lunar cycle and ocean tides (teaching context)
- E5: investigating First Nations Australians’ calendars and how they are used to predict seasonal changes (teaching context)
- E6: researching First Nations Australians’ oral traditions and cultural recordings of solar and lunar eclipses and investigating similarities and differences with contemporary understandings of such phenomena (teaching context)
How to use this unit
Read the topic guide, use the teacher slide for instruction, then complete the Worksheet, Practice and Test. These three activities use the same eight-question unit bank.
Teacher resource
AC9S7U03 teacher slide
Use this one-page PDF to introduce the key idea, vocabulary and teaching sequence before students begin the activities.
Open teacher slide (PDF)Common mistakes to watch for
- Describing what is seen without connecting it to a question, pattern or prediction.
- Using everyday words only and missing simple scientific vocabulary.
- Changing more than one thing in an investigation, which makes the comparison unfair.
International curriculum mapping
This table gives closest-topic mapping for search and planning. The Australian Curriculum code is exact; overseas entries are broad equivalents because each jurisdiction structures outcomes differently.
| Region | Curriculum | Closest mapping |
|---|---|---|
| Australia | Australian Curriculum v9.0 | AC9S7U03 — model cyclic changes in the relative positions of the Earth, sun and moon and explain how these cycles cause eclipses and influence predictable phenomena on Earth, including seasons and tides |
| Victoria | Victorian Curriculum F-10 | Year 7 Science: closest match in Earth and space sciences. Use this page as a VIC-aligned practice and worksheet reference. |
| NSW | NSW Curriculum | Stage 4 Science: closest content focus for Model cyclic changes in the relative positions of the Earth... and related outcomes. |
| United States | Common Core / NGSS | Grade 7 NGSS science closest topic match for Model cyclic changes in the relative positions of the Earth.... |
| England / UK | National Curriculum | Key Stage 3 / Year 7: closest programme-of-study match for Model cyclic changes in the relative positions of the Earth.... |
| Canada | Provincial and territory curricula | Grade 7 closest topic match. Canada varies by province, so use this as a broad Ontario/BC-style learning outcome reference. |
| New Zealand | New Zealand Curriculum | Level 4 Science: closest achievement-objective topic for Model cyclic changes in the relative positions of the Earth.... |
| India | NCERT / CBSE | Class 7 closest NCERT/CBSE topic match for Model cyclic changes in the relative positions of the Earth.... |