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Science Review

Science Review. Properties of Soil. Energy from the Sun. When we talk about the properties of soil what do we need to name?. how it feels how it looks its ability to contain water its ability to support plant life. What word would identify each property?. capacity. texture. color.

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Science Review

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  1. Science Review Properties of Soil Energy from the Sun

  2. When we talk about the properties of soil what do we need to name? • how it feels • how it looks • its ability to contain water • its ability to support plant life What word would identify each property? capacity texture color richness

  3. SOIL IS IMPORTANT!Many products we buy can be traced back to the soil. AIR SPACE NUTRIENTS What does soil need to support plant life? WATER

  4. Plant 3 bean seeds in the same size cup, with the same amount of soil, but remember to use different types of soil. Water your plants every 2 days. Observe and record the growth in height you see for the 3 plants. After a few weeks make a bar graph to display the results of your experiment. How can you test different types of soil to see which best supports plant growth?

  5. The process and chart below would help you test what property of soil? Step 1: Take a small sample of soil and moisten it with water. Step 2: Place the soil sample between you thumb and forefinger and gently rub. Step 3: Classify your findings based on the chart below. • Formation • Texture • Capacity to retain water • Ability to support life

  6. A student is testing the amount of water retained by different types of soil. Equal amount of soil and water were added to each container. To determine the amount of water retained by each soil sample, the student would… I added 200 ml to each soil. Now I will read the amount of water I see in each beaker. Here is my observation: How much water did the clay soil retain? A Add the amount of each soil sample to the amount of water added to each soil sample. B Divide the total amount of water added to each soil sample by the number of samples being tested. C Subtract the amount of water collected below each sample from the water added. D Multiply the amount of water added to each soil sample by the number of soil samples being tested. topsoil gravel sand clay Always subtract what you see in the beaker from the amount you poured into the soil. A 90 ml B 120 ml C 110 ml C 105 ml

  7. Which of the following safety tools would you need if you were investigating the texture of soil? X A Fire extinguisher B Gloves C Insect repellent D Goggles X X You want to protect your eyes from the tiny soil particles. Why can’t you wear gloves? You would not be able to feel the texture of the soil.

  8. Look closely! Which model demonstrates a way to test properties of three different soils in order to see which type of soil best supports the growth of sunflower plants? type of seed A Test A B Test B C Test C D Test D amount of soil size of container amount of water Which variables MUST NOT CHANGE? Only change the type of soil in each container.

  9. When we talk about the properties of soil what do we need to name? • how it feels • how it looks • its ability to contain water • its ability to support plant life What word would identify each property? capacity texture color richness

  10. Measuring Plant Growth in Different Types of Soil The chart above was made to show the heights of the three bean seeds after a few weeks. Which soil shows that it would NOT best support plant life? WHY? Clay will not let water pass through. It will hold too much water which is not good for plant growth.

  11. Sand Gravel Humus Silt Clay Soil that is soft and drains quickly. Holds water and feels slimy when wet Dark and moist; adds nutrients to the soil. Looks like fine grains Rock particles Match the following words to their definition.

  12. What is the main source of energy for Earth? The Sun

  13. The sun provides Earth with … Heat Light

  14. Every living thing needs energy! Where do plants get their energy? A from the moon C from the sun B from people D from the stars Where do some animals get their energy? A from the sun C from rain B from plants D from clouds

  15. the SUN What drives the water cycle? Condensation Precipitation Evaporation Transpiration Runoff Water

  16. Which part of the water cycle causes flooding and creeks to rise? A evaporation B condensation C precipitation D transpiration

  17. Another question about the water cycle… What part of this picture caused transpiration in the water cycle? A the lake B the house C the clouds D the plants

  18. Here’s another question… What effect would it have on Earth if the sunlight was blocked from shining on the water and land for months at a time? A precipitation would increase B condensation would increase C evaporation would slow down D everything would stay the same

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