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?

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

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

   Use the picture in question 1.

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

   Which box leads to the desert box, Esme asks?

   Use the picture in question 1.

   • The dam finished in 2005
   • The lake down to 10% of its size
   • Watered farmland in the Ferghana Valley
   • The first box, directly
5. 4.

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

   Use the picture in question 1.

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

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

   Use the picture in question 1.

   • 90%, nearly the whole lake
   • 1%
   • 10%
   • 50%
7. 6.

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

   Use the picture in question 1.

   • Farms got the water, and the lake shrank
   • Irrigation ruins each lake it touches
   • The lake shrank for no reason
   • 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 Aralkum Desert
   • The Dutch polders
   • No other chain
   • The Banaue Rice Terraces, cut from dry rock
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.

    • Leave it: one cause, one effect
    • Change "lake" to "sea wall"
    • Change it: farmland got water too
    • 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"
    • Leave it: the whole sea is back
    • Change it: it helped the North Aral Sea