The method and the results are on the solar system lab. Do the analysis yourself first, then check the answers below.
Quick answer: The solar system is the Sun with the eight planets that orbit it, held in place by the Sun's gravity. These answers go with the grade 6 science lab on solar system: the graph, the calculations, the uncertainties and the conclusion explained, for all 7 analysis questions.
Here are the solar system lab answers for grade 6 science: graph, calculations, uncertainties and conclusion. First do the lab yourself, then compare, and go back to the lesson if needed.
These model answers use the sample table. If your values differ a little, check that your pattern is the same: the smaller the angle, the larger the lit area and the weaker the light.
The area increases from 12.6 cm² at 90° to 25.1 cm² at 30°. The smaller the angle, the larger the area.
Question 2 Brightness
Relative brightness falls from 1.00 to 0.50. The same light is spread over a bigger area, so each square centimetre gets less. Brightness decreases.
Question 3 Check a value
Area = 0.785 × 8.0 × 4.0 = 25.12 cm². 25.1 cm².
Question 4 Link to seasons
In summer the Sun is high, like the 90° or 60° beam: strong, concentrated light. In winter the Sun is low, like the 30° beam: spread out and weaker. High angle = summer, low angle = winter.
Question 5 Predict
4.0 ÷ 0.342 = 11.7 cm. About 11.7 cm.
Question 6 Errors
Reading the edge of a blurry spot: use a darker room and a sharper beam. Torch distance changing: mark the distance with a string. Control distance and measure edges consistently.
Question 7 Limits of the model
A torch does not show the Earth’s curve, the changing day length or the atmosphere. It shows only the angle effect.
