Science & Social Studies Review

In our last experiment, what happened to the chalk when it was shaken with pebbles and water?

• The chalk got smaller, sometimes broke into small pieces, and the water changed color.

• The chalk stayed the same, and the pebbles broke into smaller pieces.

• Nothing new happened. Everything stayed the same.

Look at the water, soil, and mud in this photo. What is this an example of?

• weathering (the breaking down of rocks into smaller pieces)

• erosion (when wind or water carries rocks or soil to a new place)

• Wants and Needs

Look at this photo of a rock structure found in a desert. What is this an example of?

• Erosion (when wind or water carries rocks and soil to a new place)

• Weathering (the breaking down of rocks into smaller pieces)

• Adverbs

What are wants?

• things people would like to have but do not need

• things people must have to live

• stores where people can shop with their families

What are needs?

• things people must have to live

• things people would like to have but do not need

• special days of the year when people give gifts to each other

Organize these options into the right categories. Are they wants or needs?

Groups:

(a) Wants

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(b) Needs

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