As a riverbank erodes away, sand and mud are transported downstream and settle at the bottom of a lake. Over time, what type of rock is most likely formed at the bottom of the lake?

The top layer of Earth is only about 50 kilometers thick. This layer is known as the

What makes up most of the outer core of Earth?

Geologists placed posts on opposite sides of divergent plates to determine the rate of plate movement. How far apart will the posts most likely have moved after 10 years?

What is the best approximation of the distance a tectonic plate moves each year?

Which of these is mostly likely to happen because the oceanic lithospheric plates move away from each other?

Which of these formed the Appalachian Mountains?

As the ozone layer in the upper atmosphere becomes depleted, skin damage can occur from exposure to high levels of ultraviolet (UV) rays. Which human activity has contributed to the breakdown of the ozone layer?

When water vapor, methane, and carbon dioxide are released into the atmosphere, trapped heat is reradiated back to Earth. Which of these will most likely occur when heat is reradiated back to Earth?

Which of these is a characteristic of a mineral?

Which question would NOT be useful to ask if you wanted to identify a mineral?

The way a mineral reflects light is called its

Which is the hardest mineral on the Mohs scale?

When magma transforms into igneous rock, which process is taking place?

When sedimentary rock transforms into metamorphic rock, which process is taking place?

Which rock forms from magma that cools and hardens?

Which rock forms from sediments that become compacted and cemented together?

Which layer of Earth consists mostly of iron?

Which of these layers makes up most of Earth's mass?

Which statement is true about Earth's tectonic plates?

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