Which statements about cirrus clouds are true? choose all answers that are correct. a. cirrus clouds form high in the sky. b. cirrus clouds usually mean fair weather. c. cirrus clouds near the ground are called fog. d. cirrus clouds are ice crystals that look like wispy streamers.

How can you use chemical equations to predict the products of the reaction you can carry out?

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12