6th Grade Earth/Space 1st Semester Review

The two categories of igneous rocks are intrusive and extrusive

The most common igneous rocks are obsidian and pumice

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

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

The circulation of material caused by differences in temperature and density

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

A ____________ forms where two plates slide past each other

Number 4 is the

The dependent variable is also called the outcome variable

The way a mineral reflects or absorbs light is called its

The layer of gases surrounding Earth

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

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

A conglomerate is a Metamorphic rock

The two types of weathering are mechanical and chemical

Molten rock above Earth's surface is

The crust and upermost mantle is called the lithosphere

Stress that pulls something apart

The rapid downhill movement of soil, loose rocks and boulders

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 natural solid mixture of minerals or grains

The equilibrium between continental crust and the denser mantle is called

Squeezing stress is

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

Permanent change in shape by bending and folding is called

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

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

The 3 rock types are

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

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

_______ is the remains of something that was once alive

A change in the shape of a rock caused by stress

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

________ form where two plates collide

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

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

All living organisms on Earth

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

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

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

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

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

All of the organisms that live in a region are called

The hardest mineral on the Moh's hardness scale is

Number 1 is the

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

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