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34 Cards in this Set
- Front
- Back
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The energy from the Sun is the energy source that drives the water cycle.
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Volume is measured in liters, milliliters, or cubic centimeters.
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A scientist manipulates (changes) only one variable at a time to keep an experiment controlled.
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Condensation occurs when water gains enough energy from the sun and warm air to change state.
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To accurately measure the mass of an object in a container, subtract the mass of the container from the total mass of the substance + the container.
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During the day, the land warms up faster than the ocean, causing air to rise above the land, resulting in wind blowing from the land to ocean.
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Clouds form whenever air is cooled to its dew point.
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You should read the bottom of the meniscus (curve) to accurately measure the volume of a liquid in a graduated cylinder.
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About 97% of Earth’s water is found as salt water in the oceans.
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The temperature at which condensation begins is called the dew point.
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To model the phases of the moon, a student would need a light source to represent sunlight and two balls to represent the moon and the Earth.
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A weather map is a model of the conditions in the atmosphere at a given time.
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The greatest percentage of Earth’s fresh water consists of ice.
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Water is called the universal solvent because it dissolves so many things.
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Surface tension is the property of water that allows an insect to skim lightly across the surface of a pond.
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The purpose of treating drinking water is to make the water safe and appealing to drink.
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Elements cannot be broken down chemically into other substances.
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Protons are in the nucleus and have a positive charge; Neutrons are in the nucleus and have no charge; electrons orbit around the nucleus and have a negative charge.
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An electron moves around the central core of an atom
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A chemical compound is CaCO3 (calcium carbonate – chalk).
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A water molecule is two hydrogen atoms bonded to on oxygen atom ... H2O.
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A chemical bond is the force that holds two atoms together.
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Wetlands help control flooding by absorbing runoff from heavy rains.
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Only three percent of Earth’s water is fresh water.
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Most of Earth’s fresh water is found as ice.
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Brackish water is water that is partly fresh and partly salty.
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The James River Watershed is Virginia’s largest watershed and covers nearly ¼ of the state.
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The James River is wide and slow moving where it meets the Chesapeake Bay.
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To test the effectiveness of an insulator, a thermometer may be used.
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A stopwatch could be used to measure the amount time it takes a ball to roll a certain distance (kinetic energy).
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Inferences can be verified by measuring the materials, analyzing the data, and comparing the results.
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The advantage of solar energy is it will not run out for billions of years.
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Fossil fuels are non-renewable because they take millions of years to form.
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Plants convert radiant energy into chemical energy through photosynthesis.
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An estuary is a coastal inlet where fresh and salt water meet.
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A watershed is the land area that supplies water to a river system.
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An area in which all living and nonliving things interact is an ecosystem.
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Increased runoff is one result of paving land within a watershed.
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Pollution from factories can seep or soak into the land causing groundwater contamination.
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Erosion by wind or water can cause loss of soil not protected by plants.
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Erosion by wind or water can cause loss of soil not protected by plants.
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Erosion by wind or water can cause loss of soil not protected by plants.
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People can reduce the emissions that contribute to smog and the greenhouse effect by driving their cars less.
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The Sun’s energy is the original source of heat trapped by the greenhouse effect.
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Water molecules in all three states looks like this: solid -tightly packed, liquid - loosely packed, gas - spread out.
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Energy conservation means reducing energy use and an example of this is recycling aluminum cans.
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Heat from Earth’s surface escapes into space and some of it is trapped by greenhouse gases.
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The ozone layer protects humans from the harmful effects of too much ultraviolet radiation like skin cancer.
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Erosion and soil loss occur when soil is not protected by plant cover.
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Locating a factory in a developed area may result in pollution seeping into the groundwater.
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An example of point source pollution is when a chemical factory leaks chemicals into a nearby river.
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Global warming may lead to the melting of the Antarctic ice cap.
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It takes Earth about 24 hours to rotate one time.
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The movement of one object around another is revolution.
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Day and night are caused by the Earth’s rotation on its axis.
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Earth has seasons because Earth’s axis is tilted as it moves around the sun.
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Plants convert the Sun’s radiant energy into chemical energy during photosynthesis.
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Fuels that take millions of years to form are considered fossil fuels.
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It takes Earth about one year to revolve around the sun.
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All of the inner planets are small in size and have rocky surfaces.
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The Sun’s energy will not run out for billions of years is one advantage of solar energy.
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If you wanted to prove that the increases in local rain acidity is the result of a local coal-burning plant, you should compare the schedule and amount of coal burned at the plant with the timing and acidity of rain during at least one week.
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The smallest planet is Mercury.
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The manipulated variable is the independent variable and the one that the scientist (I) change on purpose.
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The metric measure for mass is kilogram.
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Scientists measure temperature in degrees Celsius.
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To ensure reliable results, a student should repeat the experiment and average the results.
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To test the effectiveness of newspaper as an insulator, you should use a thermometer.
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