Science: Earth and Space Test 12 (Final Exam)

 Sarah and Ella are disagreeing on the use of wood as a natural resource. Sarah says that humans should avoid using wood as a resource and should instead leave forests in their natural condition. Ella says that humans should harvest trees from some areas for use and plant new trees in those areas. Which of the following terms best describes Ella's view?

• preservationist

• pantheist

• environmentalist

• conservationist

 Throughout the year, the length of a sidereal day does not change. Why not?

• Earth's speed as it orbits the sun varies.

•  Earth's speed as it orbits the sun is constant.

•  The stars do not seem to move as Earth orbits the sun.

• The stars orbit the sun at the same speed Earth does.

When soaring birds want to rise higher in the atmosphere, they often will find column of rising air, called a thermal, and circle around the rising air until they reach their desired altitude. What method of heat transfer causes the thermal?

• Convection, because the hot land warms the cold air above it.

• Convection, because warm air rises through cold air.

•  Conduction, because the hot land warms the cold air above it.

• Conduction, because warm air rises through cold air.

Which of the following statements best explains why planets closer to the sun orbit the sun faster than those farther away?

•  The sun's gravitation pulls less strongly on closer planets.

•  The sun's gravitation pulls more strongly on closer planets.

•  The moon's gravitation pulls more strongly on farther planets.

•  The moon's gravitation pulls less strongly on closer planets.

A homeowner in the tropics wants to be able to power his home using renewable energy. His home is near the sea, leading to frequent sea and land breezes. For much of the year, it rains almost every day. Based on what you know, what type of power would be best to use?

• natural gas

• solar energy

•  wind power

• biogas

Environmentalists usually claim that recent rises in global temperature are caused by human release of ________ _______ .

 Energy that is generated from resources like living things, sunlight, wind, and water is ____________ energy.

The most fuel-efficient way for a spacecraft to move between circular orbits at different altitudes is by using a _______ orbit.

The oldest form of renewable energy, obtained from plant and animal products, is _________ ______.

An instrument used to measure the speed of the wind is an __________.