Lightning rods are used to protect buildings from lightning strikes. Lightning rods are made from materials that are good electrical conductors. Which material is best for making a lightning rod?

Rain washes a pesticide into a river. How would the pesticide most likely end up in the tissues of a fish-eating osprey?

The diagram shows the sun, the moon, and Earth. When the sun, the moon and earth are in the positions shown, which of the following occurs?

Which of these is the direct cause of air movement between areas of high and low pressure?

Which of the following describes a year?

One fingernail-sized pellet of nuclear fuel has the same amount of energy as nearly 500 kilograms of coal or nearly 400 liters of gasoline. When nuclear fuel is converted to electricity, why is the total power value of the electricity less than that of the nuclear fuel that was used?

Which of the celestial bodies described is an asteroid?

Which of the celestial bodies described is a star?

Which of the celestial bodies described is a comet?

Which of the celestial bodies described is a moon?

The diagram shows a simplified doorbell circuit. When the button is pushed, the electricity powers and electromagnet that moves a striker against a chime. Which energy transformation occurs after the button is pressed?

Which of the following describe abiotic elements in a coniferous forest biome?

Which statement best describes the flow of energy in this food web?

When viewed from Earth, when will the illuminated side of Venus most likely be the brightest?

A certain biome receives less than 10 cm of rainfall each year. Plants in this biome may have long taproots that reach water deep underground or may have shallow root systems that catch rainwater as soon as it hits the ground. Which biome most likely contains plants with these adaptations?

A group of campers decides to build a fire. The campers put wood in a pile with dry leaves. The materials burn and energy is released. Which best describes what happens to the energy in the wood and leaves during this process?

The table shows data about the planets that orbit the sun. What conclusion is supported by these data?

Students were instructed to determine if convection was occurring in their classroom. The students used thermometers to measure air temperatures at different locations along the ceiling of their classroom. Which of these best identifies the experimental error in this investigation?

The map shows a high pressure system. The lines on the map represent areas of equal atmospheric pressure, measured in millibars. The difference in atmospheric pressure between Point X and Point Y causes

Scientists developed a new pesticide to protect food crops from rodents. Which is the most likely unintended negative consequence of spraying the new pesticide on crops?

A student is designing and building a solar oven for a school project. The project requires the solar oven to reach at least 90 degrees C inside, using only energy from the sun. Which is the best way for the student to test the prototype once it is built?

Which action would increase the gravitational potential energy of a rubber ball at the top of an incline?

A scientist is studying a host-parasite relationship in a freshwater pond. The scientist needs to identify the species of the parasite in the tissue of the host. Which instrument would best help the scientist identify the parasite?

The diagram shows the movement of a water current. At which point is the water in the current the coldest?

The picture shows a gas-operated heater. When a person pushes a switch on this heater, a spark ignites the gas and produces a flame. Heat from the flame is then directed downward. Which type of energy is stored in the gas that is used by this device to produce heat?

A teacher describes an object in space as a natural satellite that revolves around a planet. The teacher is describing a

Which of these is considered a consumer in an ecosystem?

The table shows characteristics of an object in the solar system. According to the table, which body is most likely being described?

The table shows some environmental conditions in the tropical Atlantic Ocean. These data are characteristic conditions of a

When a teacher removed a sample of matter from a sealed container, it produced a flame. The chemical energy in the sample was transformed into which types of energy?

A lunar cycle occurs approximately once every

What is the source of energy that heats the atmosphere and creates air movement?

A spring door hinge is a device that allows a door to close automatically. When the door opens, the spring squeezes to a smaller size. When the door is released, the spring expands to its original shape as it closes the door. Which best describes the energy in a spring door hinge while the door is open?

The diagram shows Earth at four different locations as it orbits the sun. Which season begins in the Northern Hemisphere when Earth is at Position 3?

The diagram shows Earth at four different locations as it orbits the sun. Which season begins in the Southern Hemisphere when Earth is at Position 3?

The diagram shows Earth at four different locations as it orbits the sun. Which season begins in the Southern Hemisphere when Earth is at Position 4?

The diagram shows Earth at four different locations as it orbits the sun. Which season begins in the Southern Hemisphere when Earth is at Position 2?

The diagram shows Earth at four different locations as it orbits the sun. Which season begins in the Northern Hemisphere when Earth is at Position 2?

Which energy transformation must occur for this circuit to produce sound?

The table shows temperatures at different elevations over a three-hour period. Which conclusion is best supported by the data?

Engineers from an automobile company are making a new car. The seats in older models of cars become very hot. The engineers want seats in the new car to stay cool even in hot weather. Which should be the first step toward solving this problem?

Solar cookers use sunlight to cook food. An engineer wants to build a solar cooker that will cook faster than those that are currently available. After building the prototype, which step should the engineer perform next?

Which is the best forecast for conditions on Wednesday?

Students created a graph that shows the distances a bat traveled from its cave each day for five days. From which of these tables did the students get the data to create the graph?

A person observes an airplane flying at a high altitude. As the airplane descends closer to Earth's surface, how will it most likely appear to the observer?

Which best describes the change in energy that takes place as a log of wood burns?

A student has a toy Ferris wheel that moves when placed in sunlight. Which best describes the energy transformation that moves the Ferris wheel?

A raccoon eats berries for energy. What type of energy do the berries provide to the raccoon?

The graph shows data from a brick being pushed along a concrete surface. What happened to the kinetic energy of the moving brick?

When the switch is closed in the circuit below, the buzzer makes a sound. What causes the buzzer to produce sound?

Which material best conducts an electric current?

Mushrooms are considered decomposers because they obtain nutrients from

Gazelles living in the grasslands of Africa eat grass and tree leaves. Gazelles are eaten by lions. Which of these terms describes the role of gazelles in this ecosystem?

The food chain shows one part of a complex food web. How is energy transferred in this food chain?

Which of the following best describes a coniferous forest in the winter?

An organism lives in a region that has long winters with cool summer temperatures and high preciptation amounts. In which biome does this organism most likely live?

A grassland biome contains herbivores, carnivores, grasses, trees, and decomposers. The carnivores obtain energy directly from

What is described by letter K?

As Earth rotates, the moon revolves around Earth. This revolving of the moon is also known as

How would the moon appear to an observer on Earth?

How would the moon appear to an observer on Earth in about 2 weeks?

Charlie observes a low tide at his location. Which other person would also observe a low tide at the same time as Charlie?

What season occuring at point X?

What season will occur at point X in 6 months?

Which diagram shows the positions of the sun, Earth, and the moon during a solar eclipse?

Which diagram shows the positions of the sun, Earth, and the moon during a neap tide?

Which diagram shows the positions of the sun, Earth, and the moon during a spring tide?

The diagrams show the land, ocean, and heat from the sun interacting during the daytime. Which diagram correctly shows how air currents are created during daylight hours?

Based on the barometric pressure, which day had the highest chance of rain?

Based on the data, which type of weather will be expected?

A student conducts an investigation using the same kind of green glow sticks as shown in the setup below. The student then records the light intensity of each stick and how long each stick glows. Which is the independent variable in this investigation?

A student conducts an investigation using the same kind of green glow sticks as shown in the setup below. The student then records the light intensity of each stick and how long each stick glows. Which is the dependent variable(s) in this investigation?

A student conducts an investigation using the same kind of green glow sticks as shown in the setup below. The student then records the light intensity of each stick and how long each stick glows. Which is a control in this investigation?

Students were asked to record and compare the wind speeds observed every 10 minutes over a one-hour period. Which tool will best help conduct this investigation?

For a science project, a group of students want to create a representation of how organism depend on one another in a freshwater biome. Which procedure most likely need to occur first in their project?