All of the following could be considered reconstruction except A: scientists assume an area was once undersea due to the types of rock deposits
B: scientists assume an animal was a meat eater because of the teeth in its fossil C: scientists assume an animal could climb trees because of its hand structure D:scientists predict a volcano will erupt in the near future because of current volcanic activity

FILL IN THE BLANKS!1. Thermal energy moves more quickly through _____ than it does through ______.

2. _____ is the transfer of thermal energy due to collisions between particles of matter.

A. Conductors
B. Expansion
C. Heat
D. Insulators
E. Temperature

Waves sometimes travel by squeezing together and then do what

Who is the silentest that revised the atomic modle

Help?? How does the thermal energy of a swimming pool compare to the thermal energy of a lake at the same temperature? A.
Thermal energy is the total potential energy of the particles in a substance. The lake is larger, so it contains more total particles than the swimming pool. The thermal energy of a lake is greater than a swimming pool because the lake is larger.

B.
Thermal energy is the total kinetic energy and potential energy of the particles in a substance. The lake is larger, so it contains more total particles than the swimming pool. The thermal energy of a lake is greater than a swimming pool because the lake is larger.

C.
Thermal energy is the total kinetic energy of the particles in a substance. The lake is more spread out, so it contains fewer total particles than the swimming pool. Therefore, the thermal energy of a lake is less than that of a swimming pool.

D.
Thermal energy is the total potential energy of the particles in a substance. The lake is more spread out, so it contains fewer total particles than the swimming pool. Therefore, the thermal energy of a lake is less than that of a swimming pool.

i think it is B, but can someone help me if im correct or not?

When a calcium atom forms an ion, it loses two electrons. What is the electrical charge of the calcium ion? A.
+1







B.
-1







C.
+2







D.
-2

Explain why particles in a gas are free to move far away from each other.