DepEd MELC reviewer for Grade 7 Science, Quarter 4. Master the concepts, tables, and common-mistake warnings below.
The Atmosphere and Weather
The atmosphere has layers (troposphere, stratosphere, …). Weather is short-term; climate is the long-term average.
Seasons in the Philippines
The Philippines has wet and dry seasons due to the monsoons (Habagat = southwest/wet, Amihan = northeast/cool-dry).
Habagat = humid/wet (Hanging rain). Amihan = cool dry winds from the northeast.
Eclipses
| Eclipse | Alignment |
|---|---|
| Solar | Moon between Sun and Earth |
| Lunar | Earth between Sun and Moon |
SOLAR eclipse = Sun blocked (Moon in the middle). Never look directly at a solar eclipse.
Weather vs Climate
| Weather | Climate | |
|---|---|---|
| Time frame | Hours/days | Decades |
| Example | Rainy today | Tropical country |
"Weather" is what you wear today; "climate" is what your closet holds all year.
Before your test, make sure you can confidently do each of the following:
- Explain and apply The Atmosphere and Weather.
- Explain and apply Seasons in the Philippines.
- Explain and apply Eclipses.
- Explain and apply Weather vs Climate.
Re-read any section above where you hesitate, then try the worked example again without looking.