The change in the wind patterns on the Earth that causes an increase in ocean temperature is: a. El Niña c. La Niña b. El Niño d. La Niño
Stars are able to form from clouds of dust and gas because of. A) The Law of Entropy. B) The Law of Propulsion. C) The Law of Universal Gravitation. D) The Law of Stellar Evolution
What happens when the temperature of an object increases? A. The particles move closer together. B. The particles move faster. C. The number of particles increases. D. The particles stop moving.
Which of the following is true about glass recycling? a. Recycling glass reduces the rate of deforestation. b. Recycling glass eliminates greenhouse gas emissions. c. Recycling glass is an energy-saving practice. d. Recycling glass has an incredibly short turn around time.
Study Figure 10-3. How much nitrogen-14 will be produced from a 200-g sample of carbon-14 after 17,190 years?Download png
Energy from the sun reaches Earth mostly by ________. A.) conduction B.) convection C.) radiation D.) thermal expansion
Which process produces rising air when mountains push the air upward? A. orographic lifting B. localized convective lifting C. frontal wedging D. convergence
Without the skeletal system, the body could not fight off infection. Please select the best answer from the choices provided. T F
How many atoms are in a sample of 1.83 moles of potassium (K) atoms? A) 3.04 × 10-24 atoms K B) 3.29 × 1023 atoms K C) 1.10 × 1024 atoms K D) 6.02 × 1023 atoms K
If we want to describe work, we must have a. an action which causes no movement or reaction. b. a force and a movement in the opposite direction of the force. c. a force and a movement in the same direction as the force. d. an action which causes movement and an opposite reaction.
Select the statement that correctly describes how light travels.. -Light cannot travel in a vacuum because it travels slower when the light source is moving. . - Light cannot travel in a vacuum because the light source is stationary. . - The speed of light, traveling in a vacuum, will not change if the light source is moving. . - Light traveling in a vacuum changes speeds when the light source moves. .
Study the electron dot diagrams in Figure 1 above. Which two elements are most likely to react and form a compound? What type of compound are they likely to form? Download png
Which of the following angles is not coterminal with the other three? a. 591° b. 231° c. 51° d. –129°
Which of the following is NOT an appropriate result of healthy stretching? a. tension in the muscles b. a slight burning sensation c. muscle pain d. increased range of motion
Which statement correctly describes a property of white light?. . A. It makes all objects appear white.. . B. It contains different wavelengths of visible light.. . C. It allows light waves to be transmitted.. . D. It contains all waves on the electromagnetic spectrum.
Heat can never flow from __________. a. hot to cold b. cold to hot c. liquid to solid d. solid to liquid
Which of the following statements is a consequence of the equation E = mc2? A. Energy is released when matter is destroyed. B. Mass and energy are equivalent. C. The law of conservation of energy must be modified to state that mass and energy are conserved in any process. D. all of the above
A metal bolt with a mass of 8.50 x 10^-2kg and a temperature of 85.0 degrees Celsius is placed in a container of water. The mass of the water is 0.150 kg, and its temperature is 25.0 degrees Celsius. What is the specific heat capacity of the bolt if the final temperature of the bolt and water is 28.4 degrees Celsius? (Cp.w = 4186 j/k* degree Celsius)
What distinguishes mass from weight? a. mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on the object. b. weight is a measure ofthe amount of matter in an object, while mass is a measure of the force of gravity on the object. c. mass is a measure of an object's inertial force, and weight is the force exerted by that object on other objects. d. mass and weight are synonyms and ultimately describe the same principle?
For INELASTIC collisions, which of the following statements can be true? Choose all that apply. Momentum is conserved. Momentum is lost. Kinetic energy is lost. Momentum is gained. Kinetic energy is conserved. Kinetic energy is gained.I put a and c and it says it wrong down to my last tries.
Which statements about acceleration are true? check all that apply. a. the si units of acceleration are m/s2. b. for acceleration, you must have a number, a unit, and a direction. c. to calculate acceleration, divide the change in speed by the change in time. d. the symbol for acceleration is .
What lever has resistance between the axis (fulcrum) and the force (effort)? a. first b. second c. third d. fourth
Niobium has a density of 8.57 g/cm3 and crystallizes with the body-centered cubic unit cell. Calculate the radius of a niobium atom.
Hoover believed that the private sector would pull the United States out of the Depression. true false
To what is amplitude related? (1 pointthe amount of energy carried by the wave the maximum displacement from the rest position neither of the above both the first and the second choices above amplitude is related to both the amount of energy carried by the wave and the maximum displacement from the rest position . [ ] [ [ ] ]