Radiation is one way in which energy as heat is transferred. Which of the following is the best example of energy transfer by radiation? Warm surface water sinks down into the cool water below.

Warm air warms the ground below it by contact.

Cold deep ocean water rises to the surface and is warmed by contact with surface water.

Rocks sitting in the sunlight become hot to the touch.

Which of the following observations indicates that an atom has neutrons? some uncharged particles are scattered by a beryllium atom when it hits a gold foil. some uncharged particles bounce back from a gold foil when it is bombarded with alpha particles. a radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms. a radiation which attracts electrons is produced when a beryllium atom is bombarded with alpha particles.