Term
| The gas that is given off by animals is used by _____________ to make food. |
|
Definition
|
|
Term
| The process by which plants make food and give off oxygen is called _____________. |
|
Definition
|
|
Term
| Oxygen is called a(n) _____________ resource because it can be replaced. |
|
Definition
|
|
Term
| The _____________ _____________ protects us from the Sun's harmful ultraviolet rays. |
|
Definition
|
|
Term
| The atmosphere also protects us from rocks from space. The _____________ with the air burns them up before they can come to Earth. |
|
Definition
friction
STUDY TIP: Friction is why your hands heat up when you rub them together. |
|
|
Term
| Many pollutants get into the air from burning _____________ _____________. |
|
Definition
|
|
Term
| Fossil fuels were formed from the decay of ancient _____________ of _____________ . |
|
Definition
forms of life
OR
living things |
|
|
Term
| Fossil fuels are _____________ resources because they cannot be made again. |
|
Definition
|
|
Term
| Three examples of fossil fuels include _____________, _____________ , and _____________ _____________. |
|
Definition
| coal, oil, and natural gas |
|
|
Term
| Many cities experience _____________, which is a mixture of smoke and fog. |
|
Definition
|
|
Term
| Burning fossil fuels can cause harmful chemicals called acids to form in the atmosphere, which then fall to Earth in the form of _____________ _____________. |
|
Definition
|
|
Term
| The process by which we get fresh water from seawater is called _____________. |
|
Definition
|
|
Term
| Fresh water is constantly renewed in the _____________ _____________. |
|
Definition
|
|
Term
| The water that seeps into the spaces between bits of rock and soil is called _____________. |
|
Definition
|
|
Term
| The top of the water-filled spaces between bits of rock and soil is called the _____________ _____________. |
|
Definition
|
|
Term
| An underground layer of rock or soil that is filled with water is called a(n) _____________. |
|
Definition
|
|
Term
| Some groundwater seeps out of the ground in a(n) _____________. |
|
Definition
|
|
Term
| A hole dug below the water table so water can be brought up for drinking is called a(n) _____________. |
|
Definition
|
|
Term
| Most of Earth's water is contained in large bodies of salt water called _____________. |
|
Definition
|
|
Term
| The ocean floor, or _____________, contains mountains, valleys, and plains. |
|
Definition
basin
STUDY TIP: A basin is another word for a sink - think about the bottom of a sink, but no drain :) |
|
|
Term
| A stream of water that flows through the ocean like a river is a _____________. |
|
Definition
|
|
Term
| The pull of the moon and Sun's gravity on Earth causes _____________. |
|
Definition
|
|
Term
| The underwater edge of a continent is called its _____________ _____________. |
|
Definition
|
|
Term
| The _____________ _____________ leads steeply down from the continental shelf toward the sea floor. |
|
Definition
|
|
Term
| The _____________ _____________ is a buildup of sediment on the sea floor at the bottom of the continental slope. |
|
Definition
|
|
Term
| One of the flattest places on Earth, the _____________ _____________, is at the end of the continental rise. |
|
Definition
|
|
Term
| A huge underwater mountain is called a _____________ _____________. |
|
Definition
|
|
Term
| A V-shaped valley below the ocean is known as a _____________. |
|
Definition
|
|
Term
| The mountain range rising above the ocean floor of the Atnlantic Ocean is known as the _____________ _____________ . |
|
Definition
|
|
Term
| Energy to heat homes and run many common devices such as lights, computers, radios, TVs, and washers comes from _____________. |
|
Definition
|
|
Term
| Most vehicles get their energy from burning _____________ _____________. |
|
Definition
|
|
Term
| There are two disadvantages to fossil fuels: they are _____________, meaning they cannot be replaced, and they _____________ the environment. |
|
Definition
| non-renewable ... pollute |
|
|
Term
| Fossil fuels are the remains of _____________ _____________. |
|
Definition
|
|
Term
| The source of energy in fossil fuels can be traced back to the _____________. |
|
Definition
|
|
Term
| Sources of energy other than the burning of fossil fuels are called _____________ energy sources. |
|
Definition
|
|
Term
| Hydroelectric plants use running or falling _____________ to spin a _____________ to make electricity. |
|
Definition
|
|
Term
| Earth's internal heat, or _____________ _____________, can be used to heat homes and produce electricity. |
|
Definition
|
|
Term
| Plants harness the Sun's energy through the process of _____________. |
|
Definition
|
|
Term
| Devices that convert sunlight into electric energy are called _____________ _____________. |
|
Definition
|
|
Term
| A house can be heated when sunlight is trapped by _____________ _____________, or collectors. |
|
Definition
|
|
Term
| Converving energy means not _____________ what we have and using as _____________ as possible. |
|
Definition
| wasting ... little (less) |
|
|
Term
| We can also use _____________ _____________ like water, wind, and solar energy. |
|
Definition
| alternative energy (fuels) |
|
|
Term
| Renewable energy from plant matter and animal wastes is called _____________. |
|
Definition
|
|
