Water Third Grade Unit Test

If a person dumped dish detergent into a small pond, what effect would it have on the water?

• increase surface tension
• reduce surface tension
• cleaner water

Water is a ______________ Earth material.

• liquid
• rocky
• pebble-like

How might an increase in water pollution change part of an environment?

• skies are clearer
• streets are cleaner
• lakes grow more algae

When it rains on a hillside, rain will flow______________________.

• uphill
• downhill

Which system is natural, not human-made?

• wax paper on a ramp
• water cycle
• frozen water vials

When raindrops fall on a flat surface they will form ______________.

• domes
• slopes
• soap

A student wants to determine if the size of different water domes effects their speed travelling on a slope.  Which statement would not produce a fair investigation?

• All the different sized water domes start at the top of the slope
• All water domes have a clear path on the slope
• Each water dome needs to use a different slope, with some steeper than others

Which of these statements would improve the water quality of water?

• Adding soap to the river
• Adding a buffer area along the river edge
• Allowing farmers to send their animals into the river

How can humans benefit from the use of flowing water?

• Power water wheels
• Stop the flow of water wheels

All of the following are examples of lentic bodies of water except______________.

• pond
• lake
• river