Shifting surfaces
Answers are for parents and teachers.
1
Draw the journey of a grain of sand in three boxes: a big rock, pieces carried by water, a beach. Write weathering, erosion and deposition on the arrows.
Rock → (weathering) pieces → (erosion) carried by water → (deposition) beach.
2
With a grown-up, find a smooth stone or a worn step. Explain how it may have become smooth.
Answers differ. Water, wind or feet rubbed it over a long time.
3
Write three questions about a canyon. Start them with What, Why and How.
Answers differ, for example: How did the canyon get so deep?
4
A beach loses 6 scoops of sand every hour to the waves. How many scoops after 4 hours?
6 × 4 = 24 scoops.
5
Tell someone at home the difference between a slow and a quick change to the land. Give one example of each.
Slow: a pebble smoothed by water over years. Quick: a flash flood or landslide in minutes.