6th Grade Earth/Space 1st Semester Review

All of the organisms that live in a region are called

Stress that pulls something apart

The way a mineral reflects or absorbs light is called its

The most common igneous rocks are obsidian and pumice

All living organisms on Earth

German scientist Alfred Wegener proposed the theories of Pangaea and continental drift.

_______ is the remains of something that was once alive

parallel ridges that form where blocks of crust move up or down along faults

The hardest mineral on the Moh's hardness scale is

The layer of gases surrounding Earth

A large mass of ice that formed on land and moves slowly across Earth's surface

A conglomerate is a Metamorphic rock

Permanent change in shape by bending and folding is called

________ form where two plates collide

The dependent variable is also called the outcome variable

The two types of weathering are mechanical and chemical

A ____________ forms where two plates slide past each other

We should always use the U.S. Customary measurement system with science

The 3 rock types are

The mechanical and chemical processes that change objects on Earth's surface is called

A change in the shape of a rock caused by stress

For an experiment to be valid, you can test up to 10 variables at one time

_____ is rock material that forms where rocks are broken down into smaller pieces or dissolved.

Squeezing stress is

The crust and upermost mantle is called the lithosphere

A _______ is a broad, C-shaped curve in a stream

The rapid downhill movement of soil, loose rocks and boulders

A gemstone is a rare and attractive mineral that can be worn as jewelry.

In general, weathering breaks down, erosion removes, and deposition deposits material

The two categories of igneous rocks are intrusive and extrusive

The equilibrium between continental crust and the denser mantle is called

A sedimentary rock that was formed by organisms or contains the remains of organisms is a

A vent in Earth's crust through which melted or molten rock flows

Rock that contains high concentrations of a desired substance that can be mined for profit

The belief that all the continents were once part of a super continent is called

The rock cycle is the series of processes that change one type of rock into another type.

A _______ is a crumbly, windblown deposit of silt and clay

The circulation of material caused by differences in temperature and density

Number 4 is the

A _______ is a natural solid mixture of minerals or grains

The weight from the layers of sediment decreases the space between grains during what

Mountain ranges in the middle of the oceans are called mid-ocean ridges

Are vibrations in the ground that result from movement along breaks in Earth's lithosphere

The ONE variable that you MANIPULATE or TEST in an experiment is the independent variable

Where new oceanic crust forms along a mid-ocean ridge and older crust moves away from the ridge

Deep underwater troughs created by an oceanic plate subducting under another plate

Number 1 is the

Molten rock above Earth's surface is