This cumulative quiz covers the whole Observing the Universe unit: the nature of science, working scientifically, space science, Aboriginal and Torres Strait Islander astronomy, a recent advance, and the way all of these ideas connect.
This quiz is designed to test the full Year 7 Observing the Universe core unit. Strong performance means you can describe what science is, work scientifically with observations and data, and explain space science using current models and evidence.
What science is, how it is collaborative and builds on others, how theories and laws come from repeated testing, and its branches.
Observation versus inference, variables, instruments, testable predictions, tables, graphs, trends and conclusions.
Day and night, seasons, tides, Moon phases, eclipses, and how models such as heliocentrism changed with evidence.
Aboriginal and Torres Strait Islander astronomy as complementary ways of knowing, and a recent advance such as the James Webb Space Telescope.
1. Which best describes the purpose of science?
2. Which statement about how science works is correct?
3. A scientific theory becomes well accepted when it has:
4. Which is an example of an observation rather than an inference?
5. In an experiment, the variable you deliberately change is the:
6. What is the main difference between an analog and a digital instrument?
7. Which is the best example of a testable prediction?
8. What causes day and night on Earth?
9. What is the main cause of the seasons?
10. What causes the phases of the Moon?
11. Spring tides, which have the largest range, happen when:
12. The change from a geocentric model to a heliocentric model best shows that:
13. Which statement about Aboriginal and Torres Strait Islander astronomy is most accurate?
14. A solar eclipse can only occur when:
15. The James Webb Space Telescope is a recent advance because it:
Explain the difference between an observation and an inference, and give one example of each from space science.
Explain why we have day and night and why we have seasons. Make sure you describe the correct cause of each.
Describe one way that Aboriginal and Torres Strait Islander Peoples have used careful observation of the sky, and explain how this can sit alongside science as a complementary way of knowing.
The model of the Solar System changed from a geocentric model to a heliocentric model. Use evidence-based reasoning to explain what this change tells us about how science works.
1: C. Science aims to understand the natural world through observation, experimentation and analysis.
2: B. Science is collaborative and builds on the work of others over time.
3: D. A theory becomes well accepted after surviving repeated testing with strong supporting evidence.
4: A. Noting the Moon looks like a thin curved sliver is a direct observation, not an inference.
5: B. The variable you deliberately change is the independent variable.
6: C. An analog instrument shows a reading on a scale, while a digital one shows a number on a display.
7: D. A testable prediction can be checked by gathering observations, such as tracking the Moon's shape for a month.
8: A. Day and night are caused by Earth rotating on its axis once each day.
9: B. Seasons are caused by the tilt of Earth's axis as it orbits the Sun, not by distance from the Sun.
10: C. Moon phases depend on how much of the Moon's sunlit half we can see as it orbits Earth.
11: D. Spring tides occur when the Sun and Moon line up so their gravitational pulls combine.
12: A. The shift to a heliocentric model shows that scientific models can change when new evidence is gathered.
13: B. Aboriginal and Torres Strait Islander Peoples developed detailed Cultural Knowledges of the sky, such as using the Moon to read tides and stars to mark seasons.
14: C. A solar eclipse occurs when the Moon passes directly between the Sun and Earth, casting its shadow on Earth.
15: D. The James Webb Space Telescope lets scientists gather new evidence and observe more distant and faint objects than before.
An observation is information gathered directly using the senses or instruments, such as noticing that the Moon looks like a thin curved sliver tonight. An inference is a conclusion or explanation drawn from observations, such as suggesting that the Moon is in a crescent phase because of where it is in its orbit. The key difference is that an observation states what is seen, while an inference explains or interprets it.
Day and night are caused by Earth rotating on its axis once about every 24 hours, so the side facing the Sun has day and the side facing away has night. Seasons are caused by the tilt of Earth's axis as Earth orbits the Sun. The tilt means different parts of Earth receive more direct sunlight at different times of the year. A common mistake to avoid is saying seasons are caused by Earth being closer to or further from the Sun, because it is the axial tilt, not distance, that matters.
Aboriginal and Torres Strait Islander Peoples have used careful observation of the sky for practical purposes, for example reading the phase and position of the Moon to predict tides, or watching the rising of particular stars to mark the change of seasons and the right time to find certain foods. This is a complementary way of knowing because it is built on generations of careful, repeated observation of the natural world, which can sit alongside scientific understanding rather than competing with it.
The geocentric model placed Earth at the centre with the Sun, Moon and planets orbiting it. As scientists gathered better observations, for example of the way planets move, a heliocentric model that places the Sun near the centre fitted the evidence better. This change shows that science is not fixed. Models are tested against new evidence, and when a new model explains the observations more fully, the accepted model can change. The shift from a geocentric to a heliocentric model is strong evidence that scientific understanding improves as observation and reasoning improve.
Science is a collaborative, evidence-based way of understanding the natural world that builds on earlier work.
Scientists observe carefully, separate observation from inference, control variables and reason from data.
Rotation, tilt, orbits and geometry explain day and night, seasons, tides, Moon phases and eclipses.
Aboriginal and Torres Strait Islander astronomy and new tools such as the James Webb Space Telescope deepen our understanding.