Which statement describes how heat is transferred by convection? Air molecules touch the warm ground, heating them up.

Sunlight travels through space without the aid of fluids or solids.

Warm air rises and takes heat with it; eventually it cools and sinks.

Land and ocean absorb and re-emit heat from the sun.

Perform the following mathematical operations and report the answer to the appropriate number of significant figures 5.87998 + 3.100

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

A6.10 m nacl can be made by adding [x]g of nacl to a container and making the volume of water up to the 1.00 l line