Explain why the invention of the microscope led to the discovery of cells.

The attraction that occurs between two oppositely charged atoms is called

They are adding steel components to the roof supports of the structure. We know that steel elongates when heated. At what temperature will steel elongate nine inches per 100 feet of length? a) 500 degrees. b) 1000 degrees. c) 1500 degrees.

Which statement explains why sugar dissolves easily in water, but sand does not?

The energy that produces ocean waves comes from a. the rise and fall of the tides. b. rivers flowing into the ocean. c. wind blowing across the water s surface. d. rock falling into the ocean along the shore.

Does sensory neurons carry response information to organs?

Which best describes the relationship between internal energy and thermal energy? Thermal energy is a measure of the internal energy of a substance. Internal energy is a measure of the thermal energy of a substance.

5. Consider two glasses, one filled with water and the other half-full, with the water in the two glasses being at the same temperature.

1. Why is the theory that all things are made up of atoms a theory and not a fact?

A 600 N astronaut travels to an asteroid where the gravitational force is one-hundredth that of Earth. What is the astronaut's weight on the asteroid?

The analysis of data leads to what