ELC Science ( Physics ) - Component 5 / Outcome 3 **Practice questions / Activity sheets with Answers . Energy This worksheet is designed to help ELC ( Entry Level Science ) students who want to learn and practice more questions on Energy . The exercise is suitable for SEN / lower ability students , will help them become confident on this topic and should take around 20 minutes to complete. Topics covered include: Energy resources available for use on Earth. Fossil fuels (coal, oil and gas), nuclear fuel,bio-fuel, wind, hydro-electricity, geothermal, the tides, the Sun,water waves.