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Phases of the Moon and Eclipses — Free MYP2 Sciences Practice Questions
1QuestionLunar Phases and Their CycleConcept Practice
2 marks~3 minCriterion A
The diagram shows four positions of the Moon in its orbit around Earth.
Position 1: New Moon
Position 2: First Quarter
Position 3: Full Moon
Position 4: Last Quarter
Position 1: New Moon
Position 2: First Quarter
Position 3: Full Moon
Position 4: Last Quarter
a
Identify the position where the Moon lies between Earth and the Sun. [1]
b
Explain why the Moon is not visible from Earth at this position. [1]
Solutions
2QuestionWhy the Moon Changes AppearanceAssessment Practice
2 marks~3 minCriterion D
Many cultures time activities such as planting crops or holding festivals according to the Moon's phase (the shape of the lit portion we see from Earth).
a
Identify one human activity that is traditionally linked to a specific Moon phase and give a named example. [1]
b
Explain whether the Moon's phase directly causes the effect people believe it has on that activity. [1]
Solutions
3QuestionWhy the Moon Changes AppearanceAssessment Practice
6 marks~9 minCriterion C
The diagram below shows the Moon at four positions (A, B, C, D) in its orbit around Earth. The Sun is far to the right (not shown). Use the diagram to answer the questions below.
Position A — New Moon — completely dark from Earth
Position B — First Quarter — right half lit from Earth
Position C — Full Moon — fully lit from Earth
Position D — Third Quarter — left half lit from Earth
Position A — New Moon — completely dark from Earth
Position B — First Quarter — right half lit from Earth
Position C — Full Moon — fully lit from Earth
Position D — Third Quarter — left half lit from Earth
a
Identify which side of the Moon (facing toward Earth, away from Earth, or partly toward Earth) is lit at each position. [2]
b
Explain how the Moon's changing position in its orbit causes us to see different phases from Earth. [2]
c
A student says: "The Moon's phases are caused by Earth's shadow falling on the Moon." Compare this claim with the correct scientific explanation and identify one error in the student's reasoning. [2]
Solutions
4QuestionWhy the Moon Changes AppearanceAssessment Practice
6 marks~9 minCriterion B
A student measured a stick's shadow at five times on a sunny day.
| Time | 08:00 | 10:00 | 12:00 | 14:00 | 16:00 |
|---|---|---|---|---|---|
| Shadow length (cm) | 150 | 90 | 50 | 90 | 150 |
| Sun direction | East | East-southeast | South | West-southwest | West |
| Sun altitude (degrees above horizon) | 25 | 45 | 70 | 45 | 25 |
a
Identify the relationship between Sun altitude and shadow length. [1]
b
Explain why the shadow at 12:00 is the shortest of the day. [2]
c
At 17:30 the Sun is in the west at an altitude of 15°. Estimate the shadow length and direction, and compare this shadow with the one recorded at 16:00. Justify your answer using the data above. [3]
Solutions
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