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TEK 4.10ATEK 4.10A

Identify and observe effects Identify and observe effects of events that require time of events that require time for changes to be for changes to be noticeable including noticeable including growth, erosion, dissolving, growth, erosion, dissolving, weathering, and flow.weathering, and flow.

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Which statement is true about Which statement is true about soil?soil?  

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A.A.Soil can evaporate into air.Soil can evaporate into air.

B.B.Soil can change into water.Soil can change into water.

C.C.Soil contains only small Soil contains only small pieces of rock.pieces of rock.

D.D.Soil contains small pieces of Soil contains small pieces of plants, animals and rocks.plants, animals and rocks.

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The correct answer is The correct answer is DD..

Soil is composed of small Soil is composed of small pieces of plants, animals pieces of plants, animals and rock. These pieces and rock. These pieces have broken down into have broken down into smaller parts from larger smaller parts from larger objects due to weathering, objects due to weathering, dissolving and erosion.dissolving and erosion. All All of these processes take of these processes take time.time.

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These answers are incorrect These answers are incorrect because...because...A.A. Soil is composed of solids that Soil is composed of solids that

can’t evaporate into the air.can’t evaporate into the air.

B.B. The solids that make up soil The solids that make up soil can’t magically change into can’t magically change into water.water.

C.C. Small pieces of rock are only Small pieces of rock are only oneone part of the soil mixture part of the soil mixture

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What will probably happen What will probably happen to the soil in the picture if to the soil in the picture if heavy rains should occur?heavy rains should occur?

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A.A. The soil will turn to rock.The soil will turn to rock.

B.B. The soil will wash away with The soil will wash away with the run off.the run off.

C.C. The rocks will stop the water The rocks will stop the water from flowing. from flowing.

D.D. Grass will immediately Grass will immediately replace the dirt.replace the dirt.

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The correct answer is The correct answer is BB..

The soil will get carried The soil will get carried away with the water that away with the water that runs down the hill. This is runs down the hill. This is an example of erosion.an example of erosion.

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These answers are incorrect These answers are incorrect because:because:

A.A.It takes millions of years for It takes millions of years for soil to turn into rock.soil to turn into rock.

C. The rocks will not stop the C. The rocks will not stop the flow of water they too will flow of water they too will eventually be moved by eventually be moved by running water.running water.

D. Grass seeds would first have D. Grass seeds would first have to be planted and it would take to be planted and it would take time for the grass to grow.time for the grass to grow.

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As this animal grows into an As this animal grows into an adult what change would be adult what change would be most noticeable?most noticeable?

Baby Adult

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A.A.The eyesight of the animal.The eyesight of the animal.

B.B.The number of legs the The number of legs the animal uses to walk.animal uses to walk.

C.C.The coloring of the fur.The coloring of the fur.

D.D.The place where the animal The place where the animal lives.lives.

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The correct answer is The correct answer is CC..

The best answer is C The best answer is C because as the fawn because as the fawn grows, its fur will lose grows, its fur will lose the spots and become a the spots and become a solid brown color. The solid brown color. The fawn uses the spots as fawn uses the spots as camouflage when it’s camouflage when it’s too little to run from its too little to run from its enemies.enemies.

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The other answers are incorrect The other answers are incorrect because…because…

A.A.The animal’s eyesight will not The animal’s eyesight will not change drastically.change drastically.

B.B.The number of legs the animal The number of legs the animal walks on won’t change.walks on won’t change.

D. The animal will continue to D. The animal will continue to live in the habitat where it was live in the habitat where it was born unless forced to move.born unless forced to move.

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What do the pictures above What do the pictures above show about the solubility of show about the solubility of sugar and pepper?sugar and pepper?

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A.A. Sugar is soluble in Sugar is soluble in water but pepper is not.water but pepper is not.

B.B. Pepper is soluble in Pepper is soluble in water but sugar is not.water but sugar is not.

C.C. Pepper and sugar have Pepper and sugar have the same solubility.the same solubility.

D.D. If stirred the pepper If stirred the pepper would have the same would have the same solubility of sugar.solubility of sugar.

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The correct answer is The correct answer is AA..

The sugar has completely The sugar has completely dissolved in the water and dissolved in the water and the molecules in the sugar the molecules in the sugar are now surrounded by the are now surrounded by the water molecules.water molecules.

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B. The pepper has not dissolved B. The pepper has not dissolved in the water and is still visible.in the water and is still visible.

C. If the pepper had the same C. If the pepper had the same solubility as the sugar then it solubility as the sugar then it would also not be visible.would also not be visible.

D. The physical properties of the D. The physical properties of the pepper prevent it from pepper prevent it from completely dissolving in the completely dissolving in the water no matter how much it water no matter how much it is stirred.is stirred.

These answers are These answers are incorrect because...incorrect because...

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What is the correct sequence of What is the correct sequence of the development of this river the development of this river delta?delta?

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A.A. W, X, Y, ZW, X, Y, Z

B.B. Z, W, Y, XZ, W, Y, X

C.C. X, Z, Y, WX, Z, Y, W

D.D. Y, Z, X, WY, Z, X, W

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The correct answer is The correct answer is CC..

The delta is formed gradually The delta is formed gradually as sediment is deposited by as sediment is deposited by the flowing water at the the flowing water at the mouth of the river. As the mouth of the river. As the soil builds up the water must soil builds up the water must find new ways to reach the find new ways to reach the lake by cutting through the lake by cutting through the delta in different paths.delta in different paths.

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The other answers are The other answers are incorrect because…incorrect because…

A, B and D don’t show the A, B and D don’t show the delta getting delta getting graduallygradually larger. larger. They show the development They show the development of the delta out of sequence.of the delta out of sequence.