Week+21+--+4th+Grade+Flashback!

Monday -- No School Presidents' Day!

Tuesday A new Song! media type="file" key="01-13- Weather Song.mp3" width="240" height="20"

Fourth Grade Flashback!
 * ** SC.4.E.6.4 ** ||
 * WEATHERING/EROSION **

My turn to SRE Trees can cause weathering in rocks when they wedge their roots into the rocks, causing them to split. However, trees can actually help to prevent erosion.

Which answer best describes how they do this?
 * 1) They absorb excess water so that water cannot transport soil.
 * 2) Their roots add moisture into the soil to hold the dirt in place.
 * 3) They change the slope of the land so water cannot run downhill.
 * 4) Their roots keep soil from being transported by water and wind.



Your Turn to SRE While visiting the Old Spanish Cemetery in St. Augustine, Alyssa noticed that some of the gravestones were so weathered that she could barely read the writing.

Which of the following is another example of the weathering process in Florida?
 * 1) wind blows sand against a statue
 * 2) a river deposits sand into the Gulf
 * 3) wind blows sand into dunes on the beach
 * 4) a child shovels sand into piles in a sandbox

Wednesday
 * ** SC.4.E.6.4 ** ||
 * WEATHERING/EROSION **

My turn to SRE Brandon is helping to landscape his backyard. To change the slope of his yard, he puts a large pile of dirt on the side of a hill. It looks like it's going to rain, so he suggests that covering it with a large tarp might help them after the rain has stopped.

Why should the dirt be covered?
 * 1) to help the dirt to settle into a solid mass
 * 2) to create a level place for building on
 * 3) to protect the dirt from freezing temperatures
 * 4) to prevent rain from carrying the dirt down the hill

Study Jams Weathering and Erosion

Your Turn to SRE The Grand Canyon was formed over millions of years by erosion from water, wind, and ice. Which is another example of erosion? Thursday My turn to SRE Da'Nicia is trying to identify an unknown mineral. To identify the mineral, Tanya breaks it and observes the planes and patterns formed along the break.
 * 1) water and acid dissolving minerals in rocks
 * 2) roots wedging into and splitting rocks
 * 3) glaciers scraping and moving large rocks
 * 4) frozen water expanding and cracking rocks
 * ** SC.4.E.6.2 ** ||
 * MINERALS **

Which property of minerals is Da'Nicia testing?
 * 1) cleavage
 * 2) hardness
 * 3) luster
 * 4) texture

If there's time, or as a Center to create a Graphic Organizer about the three types of rocks watch this video: media type="custom" key="25130504" Your Turn to SRE Marquis is examining two igneous rocks. He observes that one rock is light-colored and one is dark-colored. Both rocks have very large crystals and are very coarse.

How can two rocks made by the same process be so different in color?
 * 1) They cooled at different rates.
 * 2) They contain different minerals.
 * 3) They were made at different times.
 * 4) They were worn down at different rates.

Friday My turn to SRE Florida produces several nonrenewable resources. Which is NOT a resource currently produced by Florida?
 * ** SC.4.E.6.3 **
 * RENEWABLE/NON RENEWABLE ** ||
 * 1) coal
 * 2) limestone
 * 3) natural gas
 * 4) oil

Your Turn to SRE

In Florida, limes tone mining produces over 153 million tons of products a year, including concrete, asphalt, and cement.

Which of the following best describes how limestone mining should be handled in Florida?
 * 1) It should be restricted, because some people have a toxic reaction to limestone products.
 * 2) It should be restricted, because there is only a limited amount of limestone available.
 * 3) It does not need to be restricted, because new deposits of limestone can be discovered and used.
 * 4) It does not need to be restricted, because limestone can be easily replaced as sediment is compacted.

Special Thanks to Polk County Schools for making their Science Resources available for public consumption! Sharing is caring!