BEM 2018 Review

Mountains form from....

• Plates sliding past one another

• collision of plates

• plates moving away from each other

• none of these

Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?

• Star 1 is cooler and less bright than Star 2.

• Star 1 is hotter and brighter than Star 2.

• Star 1 is cooler and brighter than Star 2.

• Star 1 is hotter and less bright than Star 2.

When the plates collide, one plate often moves below the other plate. The rising magma that can result from this type of plate movement may produce —

• fossil layers

• volcanic islands

• deep-sea sediment

• seafloor spreading

The change in the appearance of the Moon in its cycle is caused by -

• the varying distance between the Moon and Earth.

• changes in the gravitational pull on Earth’s oceans.

• the relative positions of Earth, the Moon and the Sun.

• shadows of Earth that fall on the Moon.

Based on the information provided in the weather map, which city shown most recently saw a rise in air pressure?

• Baltimore

• Jacksonville

• Portland

• Rapid City

The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on earth cannot see the entire shape of the Milky Way?

• Earth is a part of this galaxy.

• Many more stars exist outside the galaxy.

• The stars in the center of the galaxy are extremely small.

• The center of the galaxy consists of a dense cluster of stars.

What is one condition that is necessary for a hurricane to form?

• Warm ocean water

• A strong cold front

• Cold ocean water

• A strong warm front

Students use a flashlight, basketball, and tennis ball to model the lunar cycle. In the arrangement shown here, the phase of the Moon most accurately modeled is the -

• new moon.

• full moon.

• first quarter.

• last quarter.

Based on this diagram, which type of stars would belong to spectral class M and have the highest luminosity?

• Main-sequence stars

• Giants

• White dwarfs

• Supergiants

Scientists theorized that the continents were once joined together even before they had modern evidence from rocks and fossils. Using only maps, they observed that -

• continents with the most temperate climates were found near the Equator.

• the oceans have become smaller throughout the history of Earth.

• the shapes of continents appeared to allow them to fit together.

• most of the larger land masses are in the Northern Hemisphere.