Curriculum
Science — Second Preparatory
Unit 1: Matter and Energy
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Unit 2: Matter and Chemical Reactions
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Unit 3: Energy Flow in Photosynthesis and Respiration
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Text lesson
Changes to Earth’s Surface
Changes to Earth’s Surface
The Earth’s surface is always changing
The Earth’s surface is always changing
- The Earth’s surface changes all the time, but most of these changes are very slow and cannot be seen in a few days.
- The factors of change are of two kinds: internal factors, which arise inside the Earth, and external factors, which act on the surface through water, wind, ice and changes in temperature.
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