The only substance found naturally in the lower atmosphere that can exist as a solid, a liquid, and a gas is ____
A) carbon dioxide
B) water
C) methane
D) ozone
B
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Which of the following conditions favour the development of dust devils?
A. cold, moist days B. hot, dry days C. cold, dry days D. hot, moist days
A traveler going north to south across Nepal would pass through ethnic regions in this order:
A) Indian Hindus, Chinese Buddhists, Nepalese atheists B) Tibetan Sikhs, Pakistani Muslims, Bangaldeshi Muslims C) Tibetan Buddhists, cultural and ethnic mixture, Hindi-speaking Hindus D) Bhutanese Buddhists, Indian Hindus, Sri Lankan Buddhists
Which of the following is most important in determining if a material will be a solid, a liquid or a gas?
A) covalent bonds B) intermolecular forces C) intramolecular forces D) nuclear forces
Which of the following terms refers to the bending of light that occurs when it enters and passes through a substance of different density?
A. scattering B. diffraction C. reflection D. refraction