Because these isotopes decay more slowly, they can be used to date much older specimens. If Milo is measuring isotopes and he notices that they seem to decay slower then average, what does that mean about the age of the specimen he is examining younger or older?
older

If the gas is heated, the particles will move faster as they gain more energy. Jim is performing experiments in his lab. If he applies more heat to gas inside of a beaker, what happens to the gas particles move faster or move slower?
move faster

Q: The closer objects are, the stronger the gravitational pull between them. Two suns moving away from each other will have increasing or decreasing gravitational pull between them?
A: decreasing

Question: Rougher surfaces have more friction between them than smoother surfaces. A piece of glass has more or less friction than a piece of sandpaper?
Answer: less

*Question*
On a hot day, an endotherm may give off more heat by increasing blood flow to the surface of the body. Karen is feeling very warm, and starts to sweat. Her blood flow is increased, likely because the day is hot or cold?
**Answer**
hot

Q: Bigger stars produce more energy, so their surfaces are hotter. Jan is comparing stars, specifically a large star and the smaller Sun. Given the size of each, Jan can tell that the Sun puts out heat that is lesser or greater?
A: greater