The earth science text says the flooded river dropped its sediment in flat layers across the valley floor. In this sentence, sediment means

A geography chapter explains that erosion has stripped topsoil from the hillside since the trees were cut. As geography uses it, erosion is

The weather unit reports that the city recorded 3 inches of precipitation last month. What does precipitation mean in this science use?

The chemistry lab sheet directs students to stir the salt until they have a clear solution. In chemistry, a solution is

The biology chapter states that muscle tissue contracts to move the bones of the arm. As biology uses the word, tissue means

The physics text explains that current in the circuit rises when the battery's voltage is increased. In this sentence, current refers to

The meteorology chapter reports that a cold front swept through overnight and temperatures fell sharply. What is a front in this weather text?

The physical science text says copper wire is used because copper is an excellent conductor. In physical science, a conductor is

A circuits lab notes that a long, thin wire has more resistance than a short, thick one. In this lab, resistance means

In the lab the students flattened a clay ball and found that its mass had not changed. In this science use, mass is

The cell biology chapter says the nucleus stores the cell's DNA and directs protein production. As this chapter uses it, the nucleus is

The physical science text explains that sound requires a medium and cannot cross the vacuum of space. Here a medium is

The biology text explains that a tapeworm absorbs nutrients from its host and gives nothing back. In biology, a host is

The microbiology lab directions say to grow a culture of bacteria on the agar plate for 48 hours. In this lab, a culture is

The earth science chapter says the Pacific plate grinds slowly past the North American plate. In this chapter, a plate is

The geology text says drilling samples show the crust is far thinner beneath the oceans than beneath the continents. Here the crust is

The chemistry chapter states that in any chemical change the total matter present stays the same. What does matter mean in chemistry?

The chemistry lab notes that adding a base turns the red litmus paper blue. In chemistry, a base is

The chemistry text points out that sodium and chlorine sit in the same period of the periodic table. In chemistry, a period is

The biology text says a desert fox's oversized ears are an adaptation that releases extra body heat. In biology, an adaptation is

The history chapter explains that nine states had to ratify the Constitution before the new government could begin. To ratify means

The history text says Congress raised the tariff on imported iron to shield Northern factories from foreign competition. In this text, a tariff is

The civics chapter notes that the Nineteenth Amendment took effect in 1920. As civics uses the word, an amendment is

The astronomy text states that Earth completes one revolution about every 365 days. In astronomy, a revolution is

The history chapter reports that during the Great Depression about one in four American workers had no job. Here depression means

The history text explains that the Fifteenth Amendment of 1870 extended suffrage to Black men. What does suffrage mean here?

The government chapter says the President called the cabinet together to advise him on the crisis. In government, a cabinet is

The civics text traces how the bill cleared the House and then went on to the Senate. In this text, a bill is

The history chapter says the party's 1860 platform opposed extending slavery into the western territories. In politics, a platform is

The history text describes how the draft pulled young men out of farms and factories into the army. Here the draft is

The history chapter records that Congress voted to annex Texas in 1845. As history uses the word, to annex is

The economics chapter counts a bakery's ovens, mixers and delivery van as capital. In economics, capital is

The geography text notes that Quito sits almost exactly at 0 degrees latitude. In geography, latitude is

The geography text says the shading on this map shows the relief of the mountain region. Here relief means

The geography chapter explains that the river drops its load of silt and builds a delta where it enters the sea. A delta is

The geography text tells students to check the map's scale before estimating how far apart two towns are. Here scale means

The geography chapter says herders graze cattle on the dry plateau standing above the river valley. In geography, a plateau is

The technical manual says to calibrate the digital balance with a 100 g reference mass before weighing any samples. To calibrate is

An engineering drawing states that the shaft must be machined to a tolerance of 0.05 mm. In this technical use, tolerance is

A chemistry lab report states that the reaction gave a yield of 4.2 g of dried product. In this report, yield is