Air column: space within the percussion instrument that determines the pitch. Percussion: sounds produced by striking the instrument with a mallet or stick, or striking one instrument against another. 2. Review the process of forming a hypothesis and making a prediction.
Dig short, shallow rows. The rows should be no more than 1/2 inch (1.5 centimeters) deep and spaced 4 inches (10 centimeters) to 6 inches (15 centimeters) apart. 3. Drop the seeds into the rows. Space the seeds approximately 1 inch (25 millimeters) apart in order to allow the onions enough room to grow and mature.
Planting Distances. Plant smaller vegetables, such as carrots, more closely than larger vegetables, such as tomatoes. Plant carrot and radish seeds closely, and then thin seedlings to 2 or 3 inches apart. Plant tomatoes, eggplant and peppers 1-1/2 to 3 feet apart.lant smaller vegetables, such as carrots, more closely than larger vegetables, such as tomatoes. Plant carrot and radish seeds closely, and then thin seedlings to 2 or 3 inches apart. Plant tomatoes, eggplant and peppers 1-1/2 to 3 feet apart.