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
   • One effect: more rain
   • New polders, and a dam
   • Watered farmland, and a shrinking lake
3. 2.

   Why is the Aral Sea chain called a trade-off, Bo asks?

   Use the picture in question 1.

   • One change brought a gain and a loss
   • It traded goods with other lakes
   • Losses came from it, with no gains for anyone
   • Gains came from it, and no losses
4. 3.

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

   Use the picture in question 1.

   • 1,650 km²
   • 6,800 km², a tenth as large
   • 680 km²
   • 68,000 km²
5. 4.

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

   Use the picture in question 1.

   • 1%
   • 90%, nearly the whole lake
   • 50%
   • 10%
6. 5.

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

   Use the picture in question 1.

   • From 1932
   • From 2007
   • From the 1960s
   • From 2005, when the dam was finished
7. 6.

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

   Use the picture in question 1.

   • Irrigation ruins each lake it touches
   • The farms are good and the lake loss did not matter
   • The lake shrank for no reason
   • Farms got the water, and the lake shrank
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 Aralkum Desert
   • No other chain
   • The Banaue Rice Terraces, cut from dry rock
   • 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"
   • Leave it: less rain is the whole cause
   • Change it: its rivers were diverted
   • 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 it: farmland got water too
    • Leave it: one cause, one effect
    • Change "lake" to "sea wall"
    • Change "rivers" to "roads"
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 "dam" to "desert"
    • Change "dam" to "terrace"
    • Change it: it helped the North Aral Sea
    • Leave it: the whole sea is back