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
What is the relationship between velocity and acceleration? Acceleration is the change in velocity over time. Velocity is the change in acceleration over time. Velocity and acceleration are equal and opposite. Velocity and acceleration have nothing to do with each other.
19. The process by which atomic nuclei spontaneously decay is called relative dating radioactivity erosion deposition 20. The time it takes for 50 percent of the nuclei in a radioactive sample to decay to its stable isotope is called the daughter product geologic time the half-life the half-time 21. The scientist who developed the theory of evolution was Harry Hess James Hutton Charles Darwin William Smith
Radloactive nuclel undergo decay because they are unstable. a TRUE b FALSE
Which of the following would cause a change in the speed of a sound wave? a the wave being made by a larger vibration b the wave moving through water C the wave changing medium from a gas to a liquid d the wave being made by a smaller vibration e none of the above
A man pulls a vacuum forward 13.6 m with a force of 33.9 N at a $55.0^{\circ }$ angle. How much work is being done to the vacuum by the man? $W=[?]J$
Select the cause of evaporation. Waves from the ocean Energy in the clouds Heat from the Sun Rain on the ground
True/False: The mass of the object affects the rate at which it falls. True False
If more force pushes two surfaces together, then the friction between the surfaces will __ stay the same increase decrease
Which of the following is the ideal way to apply pressure onto pedals? Gently at first and then with full force Stomping with force, so it reacts With your entire body weight behind it By pressing gradually
Select all of the types of electromagnetic waves that are ionizing radiation. gamma infrared microwave ultraviolet X-ray
