Download bill nye – “erosion”

BILL NYE – “EROSION”
BILL NYE – “EROSION”
1. Erosion is/is notcaused by water, ice, wind, chemicals, and sand
1. Erosion is/is notcaused by water, ice, wind, chemicals, and sand
2. The process of ____________ causes rocks on the Earth’s surface to
2. The process of ____________ causes rocks on the Earth’s surface to
change, crumbling mountains and widening valleys.
change, crumbling mountains and widening valleys.
3. When solids/ liquids are carried away by water, it is also considered a form
3. When solids/ liquids are carried away by water, it is also considered a form
of erosion
of erosion
4. When liquid water freezes in rock it ____________ and causes rocks to
4. When liquid water freezes in rock it ____________ and causes rocks to
erode by cracking them.
erode by cracking them.
5. When rain combines with iron in rock, it forms rust, which is a form of
5. When rain combines with iron in rock, it forms rust, which is a form of
____________ erosion
____________ erosion
6. When softer rock erodes faster than the harder rock above, sometimes
6. When softer rock erodes faster than the harder rock above, sometimes
a(n) ___________ is formed
a(n) ___________ is formed
7. Wind sometimes picks up sand/ boulders and blows them into rocks
7. Wind sometimes picks up sand/ boulders and blows them into rocks
causing the rock to erode
causing the rock to erode
8. Erosion is the slow wearing away of the earth’s __________________
8. Erosion is the slow wearing away of the earth’s __________________
over millions of years
over millions of years
9. When pebbles are hit by waves over thousands of years, a beach of
9. When pebbles are hit by waves over thousands of years, a beach of
________________ is formed
________________ is formed
10. Sand, ________________ and waves hit rocks and smooth out the
10. Sand, ________________ and waves hit rocks and smooth out the
surface of older rocks
surface of older rocks
11. ________________ can hold back soil from eroding and also break rocks
11. ________________ can hold back soil from eroding and also break rocks
apart – causing erosion.
apart – causing erosion.
12. Water flows into cracks of rocks and shrinks/ expands when it freezes
12. Water flows into cracks of rocks and shrinks/ expands when it freezes
causing the rock to crack
causing the rock to crack
13. As water flows over rocks, it dissolves minerals causing different
13. As water flows over rocks, it dissolves minerals causing different
____________________ to sometimes appear
____________________ to sometimes appear
14. Pounding water, wind, __________________ and rain are major causes
14. Pounding water, wind, __________________ and rain are major causes
of erosion
of erosion
15.____________________ in the air contribute to erosion.
15.____________________ in the air contribute to erosion