You are given four 400 mL beakers labeled #1, #2, #3, #4, four thermometers, and three hot plates. You place 300mL of ice in each beaker. Using the thermometers, you record the temperature of the ice in each of the four beakers. You place beakers #2, # 3, and #4 on the hot plates and turn #2 on low, #3 on medium, and #4 on high. You record the temperature every 2 minutes until the ice has melted, water is boiling, and vapor appears. Experimental Design In the experiment described above, the thermometers are: O Independent variable O Control O Dependent variable
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
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