Question: Answer the following question given this paragraph: The original rock is the source of the inorganic portion of the soil. Mechanical weathering breaks rock into smaller pieces. Chemical reactions change the rock's minerals. Q: Which type of weathering causes changes int he rocks materials, chemical or mechanical? Choices: - liquid - nuclear - mineral - chemical A:
Answer: chemical

Question: Answer the following question given this paragraph: Water is an amazing molecule. It has a very simple chemical formula, H 2 O. It is made of just two hydrogen atoms bonded to one oxygen atom. Water is remarkable in terms of all the things it can do. Lots of things dissolve easily in water. Some types of rock can even completely dissolve in water! Other minerals change by adding water into their structure. Q: What is the common term for the chemical formula h 2 0? Choices: - hydrogen - air - oxygen - water A:
Answer: water

Question: Answer the following question given this paragraph: Look at the topographic map of Stowe, Vermont ( Figure below ). There is a steep hill rising just to the right of the city of Stowe. You can tell this because the contour lines there are closely spaced. The contour lines also show that the hill has a sharp rise of about 200 feet. Then the slope becomes less steep toward the right. Q: Physical science is defined as the study of what? Choices: - light & matter - biology & light - matter & elements - matter & energy A:
Answer:
matter & energy