When a block with a hole in it is heated why does not the material around the hole expand into the hole and make it small

Because the universe is expanding, what happens to light from other galaxies as we view it from earth?

The ability of a resource base to sustain a population is known as its

Explain why pressure is not proportional to volume if the temperature changes?

Calculate the final temperature when 50 ml of water at 80°c are added to 25 ml of water at 25°c.

Wind and water power are types of energy? A) renewable B) nonrenewable

What has become an important alternative to Piagetian approaches?

How would life on earth be different if earth's axis were not tilted with respect to its orbit? A. There would be no seasons. B. There would be no day and night. C. All places would have the same climate. D. The seasons would be much shorter.

What will a spring scale read for the weight of a 75.0-kg woman in an elevator that moves upward with constant speed of 5.8 m/s?

What's the definition of: • cellular respiration • photosynthesis

What are the steps that are important to take for your safety during an earthquake? a. stay away from walls and windows c. stay away from electrical and gas lines b. get under a desk or table d. all of the above