Question:
Sound will not travel in a
Answer:
vacuum
Question:
If a neutral atom loses an electron, what is formed?
Answer:
An ion
Question:
If a solid object is taken from Earth far into space, which of the following measurements of the object will change most?
Answer:
weight
Question:
A geologist found fossils of horse bones in different rock layers of a canyon. The fossils in the lower levels show shorter bones than those in the upper-level fossils. Which conclusion is based on the geologist's observations?
Answer:
Horse's became larger over time.