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Santa's Exam Review
1st Semester Term Review SCFCS: 7th Grade Science
| Question | Answer |
|---|---|
| The investigation and exploration of natural events and the new information that results from those investigations. | science |
| An educated guess. | hypothesis |
| The act of using your senses in an experiment. | observation |
| A statement of what will happen next in a sequence of events. | prediction |
| This has been proven over and over in repeated experiments. | scientific theory |
| A rule that describes a pattern in nature. | scientific law |
| An international system of measurement. | international system of units |
| Any factor that can have one or more value in an experiment. | variable |
| The Earth system that contains all living things. | biosphere |
| A mixture of gases from layers around the Earth. | atmosphere |
| The system that contains all of the water on Earth. | hydrosphere |
| The solid part of the Earth. | geosphere |
| Naturally occurring inorganic solids that have crystal structures and chemical compositions. | Minerals |
| The frozen portion of water on the Earth's surface. | cryosphere |
| A process where we take salt out of water. | desalination |
| This includes evaporation, condensation, precipitation. | water cycle |
| The state of the atmosphere at a certain time and place. | weather |
| The average weather pattern for a region over a long period of time. | climate |
| The process that moves large bodies of Earth materials to higher elevations. | uplift |
| The shape and steepness of a landscape. | topography |
| The removal of weathered material from one location to another. | erosion |
| The atmospheric layer that is closest to the Earth's surface. | troposphere |
| The middle layer of the Earth's atmosphere. | mesosphere |
| A mixture of dust, acids and other chemicals that can be hazardous to human health. | particulate matter |
| This falls below seven on the pH scale. | acid |
| If something is higher than 7 on the pH scale, it is __________. | alkaline |
| When something is 7 on the pH scale, it is __________. | neutral |
| This is the only gas that can change to a solid, it is how dry ice forms. | carbon dioxide |
| A hypothesis should ALWAYS be written in this type of statement. | if then |
| The color of a mineral's powder. | streak |
| The way a mineral;s surface reflects light. | luster |
| If a mineral can break along smooth, flat surfaces, it displays_________. | cleavage |
| A Mineral that breaks along rough or irregular surfaces displays this. | fracture |
| A naturally occurring solid mixture composed of minerals, smaller rock fragments and organic matter. | rock |
| Individual particles in rock are called ________. | grains |
| Rock and mineral fragments that are loose or suspended in water | sediment |
| The process through which sediment turns to rock | lithification |
| What causes flat minerals to line up, giving the rock a layered appearance? | foliation |
| The laying of sediment to a new location. | deposition |
| The preserved remains or evidence of past living organisms | fossils |
| The process where one element naturally changes to another | radioactive decay |
| A visual record of Earth's history, with individual units based on changes in rocks and fossils | geologic time scale |
| This scientist proposed the idea that the Earth was once a supercontinent. | Alfred Wegener |
| The hypothesis that continents are in constant motion on the Earth's surface | continental drift |
| A state where magnetized objects orient north. | normal polarity |
| When a magnetic field reverses direction. | magnetic reversal |
| When magnetized objects reverse direction and orient themselves to point south. | reversed polarity |
| This theory states that the Earth's surface is made of rigid slabs of rock, that move with respect to each other. | plate tectonics |
| These form where two plates separate. | Divergent plate boundaries |
| This boundary forms when two plates slide past each other. | transform plate boundaries |
| These boundaries form when two plates collide. | convergent plate boundaries |
| When a denser plate sinks below more buoyant plates. | subduction |
| This force occurs as a slab sinks and it pulls the rest of the plate. | slab pull |
| This force causes plates move away from the ridge. | ridge push |
| When humans develop land, this will ultimately occur. | deforestation |
Created by:
sant-a
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