What is it called when you use something again instead of throwing it away?
Recycling
What renewable energy source is created using large blades that rotate when the wind blows?
Wind energy
What is the largest source of marine pollution?
a) Oil spills
b) Plastics
c) Sewage discharge
d) Heavy metals
b) Plastics
What type of energy comes from the sun?
Solar energy
What is the term for the energy derived from the movement of water, often used in hydroelectric dams?
Hydropower
Which of the following is a major cause of water pollution in rivers and lakes?
a) Oil spills
b) Agricultural runoff
c) Radioactive waste
d) Industrial emissions
b) Agricultural runoff
What can happen to sea levels if too much ice melts?
They rise
What is a simple way to use solar energy at home?
Solar panels on the roof
What is the process by which plants convert sunlight into chemical energy?
a) Photosynthesis
b) Respiration
c) Decomposition
d) Erosion
a) Photosynthesis
What is the term for the gradual increase in Earth's average temperature due to human activities?
Global warming
Which country is the world leader in using wind energy, producing the most wind-generated electricity?
China
Which of the following is a major cause of air pollution in urban areas?
a) Volcanic eruptions
b) Industrial emissions
c) Natural wildfires
d) Ozone depletion
b) Industrial emissions