1. Write A, if the first statement is TRUE and the second statement is FALSE Write B, if the first statement is FALSE and the second statement is TRUE Write C, if BOTH statements are TRUE Write D, if BOTH statements are FALSE Write your answers on the blank provided before each number. 1. Every atom is composed of a positively charged nucleus around which are electrons. The electrons of all atoms have the same quantity of negative charge and the same mass. 2. The nucleus is composed of protons and neutrons. Neutrons are slightly more massive than protons and have no net charge. 3. All normal atoms have exactly as many electrons surrounding the nucleus as there are protons within the nucleus. Thus, a normal atom has no charge. 4. Earth's atmosphere is full of electrical charges and the consequence thereof is the presence of the so-called electric field. Some physical phenomena that prove the presence of electric fields in the atmosphere are flashflood, landslide and soil erosion. 5. A tumor treating field (TTF) uses a portable device to deliver a low electric field to the brain tumors. The electric field inhibits the cancer cell growth during mitosis. 6. Sharks and rays have their sixth sense called reception. Their sixth sense allows them to locate their prey hidden beneath the sand at the bottom of the ocean because of the electric field generated by the muscle contraction of the prey. 7. Lightning is a form of electrostatic discharge. When a person is strike by lightning, he/she develops a certain kind of rash called Shingles rash that may exist for hours or days. 8. The metallic frames of cars and aircrafts act as Faraday cages or shields. It protects people inside when the vehicle is struck by lightning. 9. Electric eels generate their electric charge using specialized cells. These cells are known as electrocytes, which can power up like small batteries. 10. When the Van de Graaff generator starts charging, it transfers the charge to the person who is touching it. Since the person's hair follicles are getting charged to the same potential, they try to repel each other