Social studies quiz 2 grade 7

The gas that protects the Earth's surface is called :

• CO2 (Carbon dioxide)

• O2 (Oxygen)

• O3 (Ozone)

Ozone's color is slightly :

• Pink

• Blue

• Green

UV stands for :

• Utraviolet

• Ultraviolation

• Ultraviol

Name some natural disasters that happen because of Global warming

Oil, petroleum, rocks, water, coal, air, wood, plants and animals are called :

• natural resources

• organisms

• ecosystem

When the world's population increases, the natural resources ___________

• decrease

• increase

• stay the same

The elimination of forests by the process of cutting down or burning trees in forests is called :

• flooding

• drying

• deforestation

The power of producing electricity by conserving the energy coming from the rain or running water by using a turbine and a generator, is called :

• wind power

• hydroelectricity

• nuclear power