OST Practice ?'s #1

Which is a land feature created by alpine glaciers?

• • Basal sliding

• • Hanging valleys

• • Icebergs

• • Continental sheets

Answer explanation

When an alpine glacier cuts a deep valley through a mountain range but then melts, it leaves behind a hanging valley.

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NGSS.MS-ESS2-2

The Law of Conservation of Energy states that _____.

• energy cannot be created or destroyed

• energy can be destroyed, but not created, so we have to conserve it

• it is important to conserve energy in our homes

• we can only create energy, if we do not transfer it

Answer explanation

According to the Law of Energy Conservation , energy cannot be created or destroyed.

The Principle of Original Horizontality applies only to _____ rocks.

• metamorphic

• younger

• sedimentary

• igneous

Answer explanation

The Principle of Original Horizontality only applies to sedimentary rocks.

Hard parts are more likely to become fossilized because they are LESS likely to:

• be buried

• move around

• decompose

• be filled with sediments

Answer explanation

In order to become a serious, three-dimensional fossil, it has to have been a hard part of an organism because these parts are LESS likely to decompose. Hard parts of organisms are the most likely to survive long enough to be fossilized.

Which of the following statements is TRUE of a breakwater?

• • It breaks up waves and creates a calm area of water where boats can find a safe harbor.

• • It is a natural sand bar created by deposits of sand from waves.

• • It is attached to the shoreline at one end and projects out into the ocean.

• • It prevents the movement of sand down the coast.

Answer explanation

Since breakwaters are barriers that break the flow of water, they create calm areas of water.

Which of the following terms is defined as the process that explains how different igneous rocks can form from a single magma melt?

• • The discontinuous series

• • The continuous series

• • Magmatic differentiation

• • Magma cooling

Which best describes the Law of Inertia?

• • An object's velocity is directly proportional to its state of motion

• • Objects always return to their original state of motion

• • Objects spontaneously change their state of motion

• • Objects tend to remain in their current state of motion

Even though meiosis is a big event for a cell, most of a cell's life is spent in this phase where it is growing and replicating DNA.

• • Interphase

• Telophase

• Anaphase

• Metaphase

Which of the following statements is TRUE of a breakwater?

• • It is attached to the shoreline at one end and projects out into the ocean.

• • It breaks up waves and creates a calm area of water where boats can find a safe harbor.

• • It is a natural sand bar created by deposits of sand from waves.

• • It prevents the movement of sand down the coast.

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NGSS.MS-ETS1-4

Which of the following best describes a pie graph?

• • Used primarily as a comparison between numbers

• • Demonstrates a change or trend in data

• • Shows parts of a whole

• • None of these answers are correct