Benchmark Review -3

Which scientific discovery supports the claim that Earth has changed over time?

• Plants use sunlight to grow and create sugars.

• Oceans cover a majority of the surface of Earth.

• Animals can live in different climates on Earth.

• Rocks found on different mountains are different ages.

• amplitude

• frequency

• volume

• wavelength

• Major earthquakes are found only on land where there are large amounts of rocks near plate boundaries.

• Active volcanoes can only form in areas where there is little earthquake activity.

• Most of the major earthquakes and active volcanoes mark the boundaries of different plates.

• Most of the active volcanoes form in the centers of continents where the crusts are the thinnest.

Which 3 forces can affect an object without contact?

• electric

• friction

• gravity

• magnetism

• tension

The formation of "iron snow" in the bottom of the outer core is most like the process of forming which type of rock, and why?

• Igneous rock; it forms as a result of cooling temperatures.

• Metamorphic rock; it forms to withstand high temperatures.

• Sedimentary rock; it forms deep underground.

• Sedimentary rock; it forms from different types of minerals.