6th Grade Science Unit 4 - Weathering, Water Flow, Erosion, Deposition

The process by which rock materials are broken down by the action of physical or chemical processes is known as ___________ .
Check the items below that are agents of mechanical weathering:
1. ice and water
2. acid
3. plants and animals
4. gravity
Common agents of chemical weathering include: (Check all that apply)
1. plants
2. weak acids
3. water
4. gravity
5. air
Check which items below are possible sources of the acid in acid precipitation
1. hurricanes
2. volcanoes
3. air pollution from the burning of fossil fuels
4. sun spots
Rock will have a higher rate of weathering when : (Check all that apply)
1. the rock is in a very dry climate
2. the rock is at a high altitude
3. the rock has a large surface area
4. the rock is a very hard rock, like granite
5. the rock is in a very humid climate
Chemical weathering occurs faster in:
1. cold, dry climates
2. warm, humid climates
3. does not make any difference
Check which of the following makes up a mixture we call 'soil':
1. air
2. water
3. small rock fragments
4. mineral fragments
5. organic material
The layer of rock beneath soil is called ______________ .
The dark, organic material formed in soil from the decayed remains of plants and animals is called _______________ .
Which type of soil has the largest-sized particles?
1. clay
2. silt
3. sand
The removal of substances that can be dissolved from rock or layers of soil due to the passing of water is a process called __________________ .
The ______________ is used to measure how acidic or basic a soil is.
1. thermometer
2. barometer
3. siesmograph
4. pH scale
Which climate has the most-productive soil?
1. desert
2. Arctic
3. temperate forest and grassland
4. tropical rain forrest
Transported soils are always above their parent rock?
1. True
2. False
The process of by which wind, water, ice or gravity transport soil and sediment from one location to another is called ___________ .
Soil conservation protects the soil from: (check all that apply)
1. erosion
2. evaporation
3. nutrient loss
4. pollution
Which soil conservation technique restores nutrients to the soil?
1. Contour plowing
2. Terracing
3. No-till faming
4. Planting cover crops
Which of the following properties describe a soil's ability to supply nutrients?
1. consistency
2. soil structure
3. soil fertility
4. infiltation
The water cycle is driven by ____________ from the sun.
The continuous movement of water from the ocean to the atmosphere to the land and back to the ocean is a process we call the ____________ .
The area of land that is drained by a water system is called a ____________ .
Which of the following correctly describes the usual water cycle sequence?
1. precipitation, condensation, evaporation, percolation and runoff.
2. condensation, evaporation, percolation and runnoff, precipitation.
3. evaporation, condensation, precipitatioon, percolation and runoff.
4. percolation and runoff, precipitation evaporation, condensation
The river type that has the least amount of erosive energy is:
1. a youthful river
2. a mature river
3. an old river
4. a rejuvenated river
The process in which material is laid down or dropped by flowing water is called _____________.
A river often deposits its load of mud as its current slows when it empties into a larger body of water. This fan-shaped pattern is called a ________________.
A body of rock sediment that stores groundwater and allows the flow of groundwater is called an ___________ .
Most caves form as the result of:
1. abandoned mines
2. underground erosion
3. volcanic activity
4. earthquakes
Sharp icicle-shaped features that form on cave ceilings are know as:
1. stalagmites
2. driptone columns
3. stalactites
Water tables always stay constant.
1. True
2. False
In a typical home, which group of activities consume the most water?
1. Drinking, cooking, washing dishes, running garbage disposal
2. Bathing, toilet flushing, laundary
3. Lawn watering, car washing, pool maintenance
Farm fertilizer runoff is an example of:
1. point-source pollution
2. nonpoint-souce pollution
Which of the following can help protect fish from acid rain?
1. nonpoint-source pollution
2. nitrates
3. alkalinity
4. dissolved oxygen
Which feature is part of a youthful river channel?
1. meanders
2. flood plains
3. sandbars
4. rapids
Sea cliffs are usually formed by which agent of erosion:
1. waves
2. wind
3. ice
4. gravity
Which of the gravity-caused mass movements is NOT a rapid mass movement?
1. rock fall
2. landslide
3. creep
4. mudflow
5. lahar
An enormous mass of moving ice is a _______________________ .
The spectacular landforms in the Rocky Mountains were created by:
1. a continental glacier
2. alpine glaciers
_____________ are mounds of wind-deposited sand common in desserts and along sandy shores of oceans.
Your family is going on vacation to a place made up of material deposited by waves. You are going to the __________ .
Waves are the result of _____________ moving across the ocean surface.