3. Using the concept of particle motion, explain why a balloon expands when heated. Be sure to include how temperature affects the particles and their interaction with the balloon's walls.
Give two examples where refraction is useful in technology or nature.
9. Driver D had a speed between Driver A and Driver C Write a possible speed for Driver D.
2. How do the properties of liquids make the displacement method of measuring volume possible?
Part 2 - Refraction 4. Multiple Choice: What causes light to bend when it moves from air into water? a. Change in light color b. Change in light speed c. Light bouncing off the water's surface d. Increase in brightness
10. Early in the book (page 55), one of the science lessons the children hear explains that light itself is invisible and lacks color, though it seems to be visible because It illuminates the things that we do see The title of the book is obviously drawn from this passage. Why is this the title of the book? What are all of the different kinds of "light" in the book which cannot be seen?
If there are more ELECTRONS than protons the atom is... __ neutral negative
What is matter? Something that can be studied Something that has mass and takes up space Something that has force Something that has energy
5.A major league pitcher can throw ' a ball at a speed of 40.0m/s . Since the mound is 18.4m away from home plate, how long does the hitter have to react? Type a response
Select the group that consists entirely of matter. Cake, sunshine, thoughts Emotions, time, air Light, rocks, sound Potatoes, trees, tables
$\square $ Answer Bank KE: 1000.0 J PE: 3000.0 J KE: 0J $PE:4000.0J$ KE: 2000.0 J PE: 2000.0 J KE: 4000.0 J PE: 0J
Learning Log: How do you think you get something to have more kinetic energy?
If a UV light unit has four lamps in it, and each lamp is 7-watt, it is known as a __ 7-watt unit 28-watt unit 11-watt unit 3-watt unit
10. What is the mass of a meteorite that is traveling towards Earth at $1,760m/s$ with a momentum of $33,400kgm/s$
Where is the energy coming from in the lab (where does it start)? A Potential energy in the Cheeto B Potential energy in the water C Kinetic energy inside the water D Kinetic energy in the Cheeto
What should happen to the temperature of the water? A It stays the same B It goes down C It goes up
9. Your local weather report announces that the barometric pressure is 30.44 inHg. Convert this pressure to psi, atm torr, and Pa.
Express the temperature, 275.18 K in degrees Celsius. $548.33^{\circ }C$ $274.17^{\circ }C$ $2.03^{\circ }C$ $120.88^{\circ }C$ $22.78^{\circ }C$
Hubble's Law has led physicists and astronomers to the hypothesis that the universe is expanding. True False
Newton determined that the force of gravity on an object is proportional to its mass causing its mass to be canceled out (Newton's second law) and resulting in a constant acceleration. If the laws of physics are universal, then Newton should be able to apply his discoveries about gravity on Earth to the motion of the planets in our Solar System. Newton's third law says that for every force there is an equal reaction force in the opposite direction. What does this imply about the force of gravity associated with a person standing on the Earth? Choose one: A. The force of gravity on the person cancels out to zero. B. The Earth's gravity pulls downward on the person but also pushes upward on them. C. The Earth's gravity pulls downward on the person, and the person's gravity pulls upward on the Earth. D. There is twice as much gravitational force on the person than there would be if it weren't for Newton's third law.
