The highest and lowest tides are know as spring tides. When do these tides occur?

Which best describes the area shown in this aerial photograph?

The moon has a stronger influence on Earth's tides than the sun because the moon-

Remains of ancient life are most often preserved through which process?

Environmental effects of the impact of a meteorite 66.4 million years ago may have led to the extinction of many species on Earth. Which evidence best supports this theory?

A student hypothesizes that water from infrequently used school faucets contains more chemical impurities than the water from frequently used faucets. At the same time of day, the student uses a water test kit to measure the water impurities from the different faucets. Which is the manipulated variable in this investigation?

Which coordinates identify a location north of a city that has a latitude of 38.0⁰ N and a longitude of 25⁰ W?

At which range of altitude is air pressure closest to 40kPa based on these data?

What is the first object made by humans to orbit Earth?

Under which condition would a lowering of the water table most likely occur?

This weather map helps predict the location where a storm will occur by giving which type of information?

Spacecraft traveling to Jupiter from Earth would most likely have to navigate through or around which natural obstacle?

A geologist studying volcanic activity is collecting rocks that formed from hot, molten magma. What type of rock is the geologist collecting?

Which substance is a mixture of organic matter and weathered rock?

Which natural process is the main cause of the ocean currents shown?

Determining how the sea floor changes over time has given scientists information about the-

Why do regions of the world near the equator (0⁰ latitude) have a more consistent climate than regions at the middle latitudes?

In order to protect aquifers near landfills, material is placed under the soil to prevent pollution. Which property must the protective material possess?

Which is a characteristic of all nonfoliated metamorphic rocks?

Students made a hydrometer by sealing the end of a straw with wax and adding some sand until the hydrometer barely floated in fresh water. The diagram shows what the students observed when they used the hydrometer to test water from three different sites. Each water sample had the same temperature. Which of these explanations best fits these observations?

The cleavage properties of mica result from the -

A star begins its formation as gravitational forces cause instability within a-

The diagram represents areas below the surface of Earth in which fossils have been found. The fossil located in which labeled area is most likely the oldest?

Which structure is most similar to an alluvial fan in formation and composition?

Scientists study small pockets of air trapped deep within frozen glaciers. What are scientists trying to understand about the climate of Earth by analyzing ice samples?

This picture shows a sinkhole. Which of these most likely caused this sinkhole to form?

Which Virginia watershed has the greatest impact in the state due to its size?

Which mineral is most likely an ingredient used in baby power?

Pollution due to coal burning most frequently tends to affect lakes by-

Some ponds are designed to increase the amount of water seeping into the ground. These types of ponds will fail to work properly in-

Which action would most likely reduce concerns about how strip mining can harm the environment?

Crushed stone is an economic resource that is second only to coal in Virginia. How is crushed stone mainly used?

A student hypothesizes that a sample of rock formed from ocean sediments. Which would best help the student support his hypothesis?

About 2.0 billion years ago, organisms began to inhabit Earth. These complex organisms developed primarily because of-

A student on a geology trip will identify minerals by their streak. Which of these should the student bring on the field trip?

A low pressure system has moved away from the equator and is moving directly over water. When the system reaches 60⁰ N latitude, the system will most likely be at a point where-

Which characteristic do all the planets in our solar system have in common?

A scientist is studying energy transfer that occurs in the oceans, atmosphere, and Earth's interior. Which of these is the scientist most likely studying?