1. It takes a fast swimmer about 25 seconds to complete a 50 meter freestyle. What is the speed of the swimmer?2. Conduction is heat transfer by touch. Explain the direction that conduction occurs.1) Which wave of the electromagnetic spectrum has a longer wavelength than x-rays but a shorter wavelength than visible light?UV2) When thermal energy is increased in a gas, the gas will change states to a plasma. What is this phase change called?Ionization1) Cody decides to graph his afternoon run on a distance time graph. After running for 15 minutes, he takes a 2 minute rest. How does he graph the 2 minute rest2) Is air matter?Yes, air is matter.1) Which scenario is the best example of potential energy: Mary swinging in a tire swing, Joe waiting in line at the snack bar, Lucy jumping off the diving board, MattJoe waiting in line at the snack bar2) Which type of heat transfer has occurred when you get sunburned at a baseball game?Radiation1) A father and his 6 year old son are racing down a mountain on skis. If they are traveling at the same velocity, who has more kinetic energy and why?the father because he has more mass2) An object that transfers heat and electricity is known as a/an ____________ while an object that keeps heat and electricity from transferring is known as a/an _____.conductor/insulator1. The molecules of which of the following would have the most kinetic energy: an ice cube, a cold glass of water, a warm cup of tea, boiling water?Boiling water2) An object that transfers heat and electricity is known as a/an ____________ while an object that keeps heat and electricity from transferring is known as a/an _____.potential1. Which of the following mediums can sound travel through:water, empty space, a vacuum, metal, helium?2. How is negative acceleration shown on a speed vs. time graph?1) How many valence electrons does an atom of Oxygen have?2) A television works by transforming electrical energy into what other kinds of energy?1) What two measurements are necessary for calculating speed?2) Classify as a balance or unbalanced force: Kicking a football is a/an _____________________. A picture hanging on a wall is a/an _______________.1) What type of movement occurs when the net force is 0 newtons?2 ) An airplane is moving with a force of 800 N. However, there are two forces moving in the opposite direction on the airplane. The two forces moving opposite the airplane are a wind force of 60 N and an air friction of 40 N.1. What will be the net force acting on an object when two equal forces are applied on an object in opposite directions?2. What factors affect the energy of a wave?Amplitude and frequency1)How do balanced and unbalanced forces affect motion?Unbalance causes a motion, Balance does not cause a motion.2) Describe the energy transformation that occurs in a waterfall.Potential to Kinetic
