Science Questions
Explore questions in the Science category that you can ask Spark.E!
Einstein's theory of relativity tells us that travelers who make a high-speed trip to a distant star and back will _________.
Suppose that our Sun was cool enough to include Mercury in its habitable zone. Which of the following would be true in that case?
Dinosaurs went extinct, probably because of an impact, about __________ ago.
We have sent four spacecraft on trajectories that will take them into interstellar space (Pioneer 10 and 11 and Voyage 1 and 2). How long will it take these spacecraft to travel as far as the nearest stars?
The oldest fossil evidence of life dates to about __________ ago.
According to fossil evidence how far back in time did life on Earth exist?
Based on DNA studies, it seems that all life on Earth _________.
The idea that life evolves through time was first suggested in ancient Greece, and it was favored by at least some scientists of the 18th and 19th centuries even before Charles Darwin proposed the theory of evolution. What is the key observational evidence that supports the idea that life on Earth has evolved through time
Which of the following is considered by biologists to be a likely place where life first arose on Earth?
Which of the following is NOT considered crucial for life to exist on some world?
What is the name that we give to the very oldest organism at the very bottom of the tree of life? It is the ancestor of all life on Earth today, plus all animals, plants, and fungi that ever went extinct
It is astonishing that all the complexity of life on Earth can be generated using just the same 20 amino acids (plus other stuff). Which of the follow is true?
If you ever looked at medieval English writing, it looks very much like a different language. And it is, in some sense. Things change. Sometimes quickly and sometime slowly, but usually slowly. And like biological evolution, the mutations (changes) are mostly
the plant that contains a lot of silicon and therefore can use be used as a scouring brush to clean pots and pans is a
Changing a planet into one that could sustain human life is called
Although there is no organic material on the surface of Mars today, organic material is likely to have been plentiful on Mars 3-4 billion years ago. Which of the following could have been a source of organic material on Mars?
Which of the following does NOT provide evidence for how long ago life started on Earth?
The process of turning an RNA sequence into a protein is
Carbonaceous chondrite meteorites are super important for astrobiology but they are very
Do you think the amino acids and other simple organic molecules formed in Miller-Urey experiments would have a chirality ("handedness") preference? Left-handed, right-handed, or neither?