Observing Soil Respiration Materials Local soil sample (approximately 2 cups) Disposable plastic water bottle Plastic tubing Small jar or clear container with an opening only slightly wider than the plastic tubing Small cup or 100 mL beaker Graduated cylinder Duct tape (or other waterproof tape) 5 g sugar 105 mL water Bromothymol blue and color change chart Plasticine clay (optional) Object to rest the small jar/container on (optional) Procedure Cut a plastic water bottle about a quarter of the way down. [Read More]

Ocean Acidification Activity Source: Adapted with permission by National Oceanic and Atmospheric Administration. The ocean is a “carbon sink,” which means that it removes CO2 (carbon dioxide) from the atmosphere. The ocean currently absorbs about one-third of the CO2 released by the burning of fossil fuels. However, beyond a certain level of atmospheric CO2, the ocean can no longer act as a carbon sink without it having a negative impact on marine life. [Read More]

Ocean Currents Activity Source: Teachervison; Excerpt from Ready-to-Use Earth Astronomical Science Activities for Grades 5-12 Objectives Students will map the patterns of the major ocean currents. Students will learn about the influences of wind, water temperature, landmasses, and water density on currents. Materials Tin pie plates Water Oregano or chili powder (or any herb that floats) Paper or plastic straws Food coloring 150 ml beakers Hot plate (if hot tap water is not available) Table salt Map of the world Reference materials Procedure Point out that ocean currents are driven by the wind and influenced by the landmasses that obstruct the flow of water as well as the density and temperature of the water. [Read More]

Ocean Currents Change Our Earth Activity Source: NASA. Adapted with permission. Ocean currents — the continuous, directed movement of ocean water — affect regional climates and alter the biological and chemical characteristics of seawater. Currents can flow for long distances both at and below the ocean’s surface. Wind drives surface currents, whereas density often drives deep ocean currents. Density, a physical property of matter, is mass per volume. Density is not simply weight — it depends on the volume of the sample (the amount of space the sample occupies). [Read More]

Oil Behavior on Beach Sediment Activity Source: NOAA Grade levels: 4-9 Introduction Beaches are made up of sediments, which can range from fine-grained clay and mud, to coarse-grained sand or gravel. In this activity, you will explore how lighter and heavier oils behave differently when spilled onto fine-grained, medium-grained, and coarse-grained sediment. When NOAA responds to an oil spill, the differences in how oil behaves on various sediments are important. These differences affect our predictions of what the oil will do if it reaches the beach: Is it likely to remain on the beach surface? [Read More]

Oil Trap Model Activity Source: Geological Society of America. Adapted with permission. Crude oil is a liquid hydrocarbon that is thought to have formed from the accumulation and burial of mostly marine organisms in a low-oxygen environment. This environment prevents decay of the organisms, trapping the organic matter and converting it to hydrocarbons. Because oil is a liquid that is lighter than water, it naturally rises through the pores of rocks in which it forms towards the surface. [Read More]

Painting With Soil Activity Source: Soil Science Society of America, Adapted with permission Soils are one of our most important natural resources — just think of where all the food you eat comes from. They also are important for the beauty the many soil colors add to our landscapes. Most of us overlook this natural beauty because we see it every day. Often these colors blend with vegetation, sky, water, etc. [Read More]

Parks Past, Present, and Future Activity Source: Adapted with permission by National Park Service. Over Earth’s 4.5 billion-year history, tectonic upheavals and colliding plates formed mountain ranges and carved out basins. Forces of erosion and weathering have been at work to break down these landforms. Records of these processes are imprinted on the land and define distinctive landscapes around the United States and in its national parks. The dynamic processes that formed the spectacular landscapes of many national parks remain active today. [Read More]

Particle Size and Oil Production Activity Source: Adapted by AAPG from EarthComm and the American Geosciences Institute. Adapted with permission. What factors affect how easily a fluid can move through sediments? How is this flow rate connected to oil production? Many people think that oil lies in big pools below Earth’s surface. Oil actually is located in the pores within rocks (called “source rocks”). When the pores are connected, oil can flow slowly through the rock. [Read More]

Places on the Planet: Latitude and Longitude Activity Source: Geological Society of America, 2006. Adapted with permission. Background You may have seen or used Global Positioning System (GPS) devices in cars or on camping trips. These devices use data from satellites orbiting the Earth to locate places on our planet. GPS devices describe the locations to us in the form of latitude and longitude coordinates. Citizen scientists involved in the Geological Society of America’s EarthCaching project (http://www. [Read More]