Which of the following scientists won a noble prize of pioneering work in the study of the evolution of stars?

Which hypothesis could be used in a scientific experiment and possibly lead to more hypotheses and experimentation?

Which movement causes day and night on Earth? rotation of Earth revolution of Earth around the Sun Earth's elliptical orbit in space moon's orbit around Earth

A 30 kg child sitting 5.0 m from the center of a merry-go-round has a constant speed of 5.0 m/s. while she remains seated in the same spot and travels in a circle, the work the seat performs on her in one complete rotation is

Ideentify the two atmospheric layers that contain air as warm as 25 degrees Celsius.

Two massive objects are fixed in position. A third object is placeddirectly between the first two at the position at which the totalgravitational force on the third object due to the two massiveobjects is zero.

Which of the following are steps for balancing chemical equations? Check all that apply. ] A. Multiply the reactants to get the products. B. Change subscripts. O C.

1. Why does the water vapour in clouds condense? 2. Explain why you can see clouds but not see the water vapour in the air

What are some similarities between electricity and gravity?

What's the difference between solids and liquids?

According to the Theory of Continental Drift, what did the Earth's continents look like 255 million years ago?