An increased flow of electric current through a thermistor element indicates a __ temperature. Higher. Lower.
What is the heat energy involved in the change of state, or phase, in water? mechanical heat sensible heat radiant heat latent heat body heat
How long is the string of buoys? 20 meters 10 meters 14 meters 28 meters
What quantum number determines the energy and size of an orbital? a) The angular quantum number b) The spin quantum number c) The magnetic quantum number d) The principal quantum number
Power can surge when coming back on, so you should leave everything plugged in. True False
Heat is thermal energy that matter contains. transfers. both of these none of the above
Which law of thermodynamics tells us what is most probable in nature? 0^thlaw 1^stlaw 2^ndlaw 3^rdlaw
8) Which of the following is suitable as a minimum shielding for gamma radiation? A) regular clothing B) lab coat C) gloves D) lead E) paper
Jack tries to place magnets on the door of his refrigerator. He observes that the magnets don't stick. He guesses that the door of the refrigerator is made of a nonmagnetic substance What stage of scientific investigation does his guess represent? A. ask questions B. construct a hypothesis C. explain the results D. make observations
What is the temperature at which all molecular movements stop called? A. absolute zero B. standard temperature C. boiling point D. freezing point
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
