Eclipses & Tides: Alignment with Different Mechanisms — Drills · Grade 6 Science
Chapter: Earth, Moon, Sun & Space ModelsWhat these drills covers
By the end of Eclipses & Tides: Alignment with Different Mechanisms you should be able to:
- I can explain the geometry of a solar eclipse and a lunar eclipse.
- I can explain why eclipses do not happen every month.
- I can explain why there are two high tides a day rather than one.
4 questions, multiple choice and written answer, each with a worked explanation.
Vocabulary used: tidal range, eclipse, evidence, system boundary, uncertainty.
Problem 1
- Ocean tides are caused by the Moon’s shadow.
- Every new or full phase must produce an eclipse.
- tidal range: The difference between high and low water levels using the same reference.
- A sample with missing measurements has proved those values are zero.
Answer and explanation
tidal range: The difference between high and low water levels using the same reference.
The difference between high and low water levels using the same reference.
Problem 2
- Repeating any method makes every causal claim true.
- Ocean tides are caused by the Moon’s shadow.
- Every new or full phase must produce an eclipse.
- eclipse: An alignment event in which one body blocks light or another enters a shadow.
Answer and explanation
eclipse: An alignment event in which one body blocks light or another enters a shadow.
An alignment event in which one body blocks light or another enters a shadow.
Problem 3
Answer and explanation
Local ocean shape, depth, movement, and timing affect the response, so a global sketch does not supply a safe local schedule.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.
Problem 4
Answer and explanation
No. The term describes the alignment-related larger tidal range, occurring through the phase cycle rather than one season.
Compare the scientific meaning and reasoning after an independent attempt. A different accurate supported response can be correct; human review is required.