Your body temperature is about 98 degrees Fahrenheit. Suppose you step into a 120-degree Fahrenheit sauna. Which way does thermal energy flow? 

On February 7, 2015 Fayetteville’s temperature reached 7 degrees Fahrenheit, a record low for that calendar day. Does this record low disprove global warming?

Which of the following are greenhouse gases? Choose all that apply.

Fill in the blank: In the core of the Sun, 0.7% of the hydrogen fuel’s _________ is converted to gamma rays and other forms of energy.

Find the slope of the line satisfying the given conditions. through (-8, -6) and (-8, 5)

From an energy standpoint, what happens when you roll a ball?

Match each wave to its type.

Briefly explain why the ozone layer has a whole in it, what caused it, its current status, and future expectations.

Suppose a truck is moving on flat ground. As it slows down due to friction, it is converting energy to energy.

Match each type of quantity to its unit.