The leading cause of home fire deaths are __ and __ B. smoking, heating A. cooking, heating D. smoking, electrical cooking, electrical QUESTION 1 When there is an electric current passing through a wire, the particles movin __ B. atoms A. ions C. protons D. electrons QUESTION 2 QUESTION 3 A voltage will influence current only if the circuit is __ A open B. closed C.insulated D. high resistance QUESTION 4 If the oil catches fire in a pan while cooking, you should A. carry the pan to the sink B. throw water on the pan and turn the burner off. C. slide a lid over the pan and turn the burner off. D. put the fire out with baking soda and turn the burner off.

1. A. cooking, heating2. D. electrons3. B. closed4. C. slide a lid over the pan and turn the burner off.

## Step1The first question is about the leading causes of home fire deaths. According to statistics, the leading causes are usually related to cooking and heating appliances.## Step2The second question is about the particles that move when an electric current passes through a wire. In a typical metallic conductor, such as a wire, it is the electrons that move.## Step3The third question is about the condition under which a voltage will influence current in a circuit. For a current to flow in a circuit, the circuit must be closed, meaning there is a complete path for the current to flow.## Step4The fourth question is about the correct action to take if oil catches fire while cooking. The safest way to extinguish a cooking oil fire is to slide a lid over the pan and turn the burner off. This is because oil fires are fueled by oxygen, and covering the pan with a lid cuts off the oxygen supply, effectively extinguishing the fire.