How people changed the land and adapted to it

Grade 7 Social Studies Worksheet - Challenge Me

Circle the best answer.

2. 1.

   Diverting the rivers led to two effects. What are they, Ari asks?

   • A bigger lake, and farms left with no water
   • Watered farmland, and a shrinking lake
   • New polders, and a dam
   • One effect: more rain
3. 2.

   How big was the Aral Sea before it shrank, Jun asks?

   Use the picture in question 1.

   • 680 km²
   • 1,650 km²
   • 6,800 km², a tenth as large
   • 68,000 km²
4. 3.

   By 2007, how much of its old size was left, Kira asks?

   Use the picture in question 1.

   • 50%
   • 10%
   • 90%, nearly the whole lake
   • 1%
5. 4.

   When did the rivers start to be diverted, Luz asks?

   Use the picture in question 1.

   • From 2005, when the dam was finished
   • From 1932
   • From the 1960s
   • From 2007
6. 5.

   What has happened in the North Aral Sea since 2005, Milo asks?

   Use the picture in question 1.

   • Its saltiness has dropped
   • It has dried up completely
   • Nothing has changed
   • The whole Aral Sea is full again
7. 6.

   Which sentence about the Aral Sea is careful, Noah asks?

   Use the picture in question 1.

   • The lake shrank for no reason
   • Irrigation ruins each lake it touches
   • Farms got the water, and the lake shrank
   • The farms are good and the lake loss did not matter
8. 7.

   Which other chain in this pack also shows people changing water to gain farmland, Pia asks?

   Use the picture in question 1.

   • The Banaue Rice Terraces, cut from dry rock
   • No other chain
   • The Aralkum Desert
   • The Dutch polders
9. 8.

   Ren's note says, "The Aral Sea shrank because it rained less." Which fix is right?

   Use the picture in question 1.

   • Change "shrank" to "froze"
   • Change it: its rivers were diverted
   • Leave it: less rain is the whole cause
   • Change "Aral" to "North"
10. 9.

    Tala's note says, "Diverting the rivers had one effect: a smaller lake." Which fix is right?

    Use the picture in question 1.

    • Change "rivers" to "roads"
    • Leave it: one cause, one effect
    • Change "lake" to "sea wall"
    • Change it: farmland got water too
11. 10.

    Zee's note says, "The 2005 dam refilled the whole Aral Sea." Which fix is right?

    Use the picture in question 1.

    • Change it: it helped the North Aral Sea
    • Leave it: the whole sea is back
    • Change "dam" to "desert"
    • Change "dam" to "terrace"