If an object emits or reflects light, A. it has a smooth surface. B. it can be seen by the eye. C. it must be the color white. D. it cannot be a gas.

Nebulas are birthplaces for new stars. True False

Place the descriptions in the correct categories. rift valleys At Convergent Boundaries At Divergent Boundaries plates pulling apart magma breaks through crust subduction volcanic mountains island arc magma flows from cracks mid-ocean ridges

What is the word used to describe the approach that considers how the different aspects of health influence each other? tach files

A horse moves a sleigh 1.00 kilometer by applying a horizontal 2,000 newton on its harness for 45 minutes.

How does the brightness of a bulb tell you about the energy of electrons passing through it?

Which best blocks X-ray particles and can therefore be observed more closely through the use of this technology?

A light ray travels inside a horizontal plate of glass, striking its upper surface at an angle of incidence of 50°. This ray is totally internally reflected at the glass-air boundary. A liquid is then poured on top of the glass.

A stationary object has no forces acting on it. True False

April swims 50 m north and then turns and swims 20 m back to the south. What is her velocity if it takes her 60 seconds?

What happens to the mass of an object when it is cooled?