Scientists are studying the Earth's climate and the greenhouse effect.
Complete the following paragraph about the greenhouse effect.
Use words from the list below. You may use each word once, more than once, or not at all.
carbon dioxide** | cooler | helium | infrared | longer | nitrogen | shorter | ultraviolet | **warmer
The Sun emits electromagnetic radiation, mostly of .................... wavelengths like visible light, which passes through the atmosphere. The Earth's surface then re-radiates this energy as .................... radiation, which has a .................... wavelength. Greenhouse gases, such as .................... , absorb this radiation and keep the atmosphere .................... than it would otherwise be.
State two human activities that increase the concentration of greenhouse gases in the atmosphere.
32 exam-style questions on OCR GCSE Chemistry Interpreting and interacting with earth systems. Each one has a worked solution and a mark scheme showing where the marks go.