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 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
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