Answer the following question given this paragraph: Q: What force provides resistance whenever two surfaces are in contact? Choices: - vibration - tension - rotation - friction A:
friction
Answer the following question given this paragraph: Hydrogen bonds also explain why water's boiling point (100C) is higher than the boiling points of similar substances without hydrogen bonds. Because of water's relatively high boiling point, most water exists in a liquid state on Earth. Liquid water is needed by all living organisms. Therefore, the availability of liquid water enables life to survive over much of the planet. Q: What is to blame for water's boiling point (100c) being higher than the boiling points of similar substances? Choices: - electrode bonds - molecular shape - helium bonds - hydrogen bonds A:
hydrogen bonds
Q: Answer the following question given this paragraph: Less dramatic types of mass wasting move Earth materials slowly down a hillside. Slump is the sudden movement of large blocks of rock and soil down a slope. ( Figure below ). All the material moves together in big chunks. Slumps may happen when a layer of slippery, wet clay is underneath the rock and soil on a hillside. Or they may occur when a river (or road) undercuts a slope. Slump leaves behind crescent-shaped scars on the hillside. Q: What is the term for the sudden movement of large blocks of rock and soil down a slope? Choices: - sludge - torrent - hurricane - slump A:
A: slump
Question: Answer the following question given this paragraph: Under the right pressure conditions, lowering the temperature of a substance in the liquid state causes the substance to solidify. The opposite effect occurs if the temperature is increased. Q: What happens to a substance in a liquid state when the temperate is lowed? Choices: - it melts - it evaporates - it dissipates - it solidifies A:
Answer: it solidifies
*Question*
Answer the following question given this paragraph: The body's first line of defense consists of different types of barriers that keep most pathogens out of the body. Pathogens are disease-causing agents, such as bacteria and viruses. These and other types of pathogens are described in Figure below . Regardless of the type of pathogen, however, the first line of defense is always the same. Q: What is the term for disease-causing agents, such as bacteria and viruses? Choices: - spores - parasites - vaccines - pathogens A:
**Answer**
pathogens
(Question)
Answer the following question given this paragraph: Air movement takes place in the troposphere. Air moves because of differences in heating. The differences create convection currents and winds. Q: What is the primary cause of air movement in the troposphere? Choices: - solar winds - asteroids - the ozone layer - differences in heating A:
(Answer)
differences in heating