Label the characteristics of stars in each area of the Hertzsprung-Russell diagram. Move ONE correct answer to each box.

• Cool, bright

• Cool, dim

• Hot, dim

• Hot, bright

• Main sequence

• White dwarf

• Blue giant

• Red giant

Based on this information, the three objects that make up the Alpha Centauri system are all —

• asteroids

• comets

• planets

• stars

The Hertzsprung-Russell diagram shown is divided into four sections. Which section of the diagram includes the coolest, brightest stars?

• Section 1

• Section 2

• Section 3

• Section 4

Based on the information, which star is most like the sun?

• Star 1

• Star 2

• Star 3

• Star 4

Which statement best describes the location of the sun in the Milky Way galaxy?

• The sun is located in the center of a spiral-shaped galaxy.

• The sun is located off the center of an elliptical-shaped galaxy.

• The sun is located on an arm of a spiral-shaped galaxy.

• The sun is located on an arm of an elliptical-shaped galaxy.

An image of the Earth-moon-sun system is shown. The moon remains in orbit around Earth because of the force of —

• F Earth’s rotation

• G the moon’s rotation

• H Earth’s gravity

• J the sun’s gravity

A student makes a model of the sun-Earth system by swinging a ball around her head. Using this model, the student is trying to explain how Earth stays on a path around the sun. The student explains that this path is the result of —

• the magnetic attraction between Earth and the sun

• potential energy stored in Earth that originated in the sun

• the gravitational attraction between the sun and Earth

• electromagnetic energy from the sun pulling on Earth

How do fossil records support the theory of plate tectonics?

• A) Similar fossils are found on the same continent at different time periods.

• B) Similar fossils are found on various modern continents.

• C) Different fossils are found on the same continent during the same time period.

• D) Fossils found along coastal regions of modern continents are unique.

Part A: Which statement describes how each land feature MOST LIKELY formed?

• A) The Himalayas formed at convergent boundaries, while the Great Rift Valley formed at divergent boundaries.

• B) The Himalayas and the Great Rift Valley both formed at divergent boundaries.

• C) The Himalayas formed at divergent boundaries, while the Great Rift Valley formed at convergent boundaries.

• D) The Himalayas formed at convergent boundaries, while the Great Rift Valley formed at transform boundaries.