On a hot summer day, heat waves can be seen rising from the asphalt. what type of heat transfer do the heat waves demonstrate?
a). conduction
b). convection
c). radiation
d). vibration

Which sentences describe disadvantages of burning fossil fuels instead of using hydrogen fuel cells? burning fossil fuels contributes to climate change. burning fossil fuels takes place inside expensive fuel cells. fossil fuels aren't widely available, but pure hydrogen is. fossil fuels are nonrenewable.

The plum pudding model of the atom states that ?

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire