Give three ways you experience normal force throughout your day. What is the difference between applied force and normal force? Friction is a force, too. How can friction help you in your daily life? How can it hurt you? In your own words, explain what non-contact forces are. How does gravitational force affect your daily life? What force causes static cling? What two types of charges does this force have? Explain how magnetic force works on a magnet. How are electricity and magnets connected? Explain in your own words how electromagnetism works. What do electrons have to do with electrical current? Explain how the atom is a part of the electrical current process. What forces come in pairs? Give an example not in the lesson. Two electromagnets are running with equal amounts of electric current. Electromagnet A uses a piece of iron as its metal core, while electromagnet B uses a piece of silver. Which one would have a stronger magnetic field? How do forces work in nature? What factors affect the strength of forces? Snout Goo Article: Key Questions and Terms Notes How do ampullae help sharks find prey in murky water? What are protons? How does the transmission of protons relate to electric force? Are the sharks using a contact or non-contact force to detect prey? A Moment of Science: Because Science Says So Video: Key Questions and Terms Notes What can the scientific method help you do? What is a hypothesis? What does the independent variable do?