A. Objective The learners should be able to investigate changes that happen in the absence of oxygen. B. Materials ● fire. Activity: TITLE: ABSENCE OF OXYGEN Jar with cover (Jar A) Jar without cover (Jar B) 2 same sized candle (small) Match or lighter Timer Ruler C. Precautionary Measure Remember to handle match or lighter carefully and don't play with it for it can cause D. Procedure 1. Label the jar with cover with Jar A and the jar without cover as Jar B. 2. Light the candles with a match and put the candles in each jar. 3. Record the time when the candles are lighted and the time when the light was put off. 4. Cover the Jar A and observe what will happen. 5. Measure the length of the candles after the flame was put off. 6. Record your findings on the chart below. Jars JAR A JAR B Time of the flame was put off Length of the candle after burning Answer the following questions: 1. Which of the 2 jars was the candle's flame put off first? 2. Which of the two candles has the shortest size? 3. What happen, when you cover the Jar A? 4. When the lighted candle in Jar A was covered, the flame was put off, what is the reason why the candle's flame did not continue to burn? 5. What are the 3 main components in combustion? Doss​

Write the different farm implements and tell their functions​

Answer:

Farm implements are tools and machinery used in agriculture to perform various tasks involved in cultivating and managing crops but here are the most common farm implements:

1. Plow:

Function: To break and turn over the soil for planting by cutting, lifting, and inverting the soil.

2. Harrow:

Function: To smooth and level the soil after plowing, break clods, and prepare a seedbed.

3. Seeder/Planter:

Function: To plant seeds at the desired depth and spacing in the soil.

4. Cultivator:

Function: To remove weeds and loosen the soil around growing plants without causing much disturbance to the crop.

5. Sprayer:

Function: To apply fertilizers, pesticides, and herbicides to crops for pest control and nutrient management.

6. Combine Harvester:

Function: To harvest, thresh, and clean grain crops in a single pass, increasing efficiency.

7. Tractor:

Function: To provide power for various agricultural operations, such as plowing, harrowing, planting, and towing other implements.

8. Rotary Tiller:

Function: To break up and mix the soil, often used for seedbed preparation and weed control.

9. Disc Harrow:

Function: To cut and break up soil after plowing, incorporating crop residues, and preparing a seedbed.

10. Manure Spreader:

Function: To evenly distribute manure or other organic fertilizers over a field to improve soil fertility.

11. Fertilizer Spreader:

Function: To distribute fertilizers in granular or powdered form evenly across the field for nutrient application.

12. Irrigation Equipment (e.g., Sprinklers, Drip Systems):

Function: To provide water to crops in a controlled manner, ensuring optimal moisture levels for growth.

13. Chisel Plow:

Function: To break up compacted soil layers and improve water penetration, commonly used in minimum tillage systems.

14. Front-end Loader:

Function: To lift and move materials such as soil, gravel, or other bulk materials, aiding in various tasks around the farm.

15. Windrower/Swather:

Function: To cut and arrange crop material into windrows for drying before harvesting, commonly used for hay and forage crops.

16. Mower:

Function: To cut grass, crops, or vegetation to a specific height, often used for forage production.

17. Grape Harvester:

Function: Specifically designed for harvesting grapes efficiently in vineyards.

18. Post-Hole Digger:

Function: To dig holes for planting fence posts or other structures.

These farm implements play crucial roles in modern agriculture, contributing to increased efficiency, productivity, and the success of farming operations.