What is a plants main source of energy? 3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy […]
When can we observe a chemical property?
When can we observe a chemical property? Chemical properties are very useful in identifying substances. However, unlike physical properties, chemical properties can only be observed as the substance is in the process of being changed into a different substance. What are chemical change properties? The signs of chemical change include changes in color, temperature, the […]
What is data in the scientific method?
What is data in the scientific method? Data are the information gained from observing and testing an experiment. Scientists use data to gain understanding and make conclusions. Scientists often use graphs or tables to show their data and research findings. What are the steps in drawing a conclusion? Important Steps for Drawing Our Conclusions 1) […]
What torque should I use for screws?
What torque should I use for screws? Setting 1 is low speed/high torque and is best for driving screws. Setting 2 is a medium speed/torque and can be used for drilling or driving. Setting 3 is the highest speed and is meant for drilling or driving fasteners. Does length of screwdriver matter? A: This may […]
Can cotton be used for insulation?
Can cotton be used for insulation? Cotton is non-allergenic and adaptable; it insulates and absorbs more cost effectively than any synthetic or artificial fabric. Cotton is used in warm climates because it wicks moisture away from the skin. It is worn in layers of waffled fabric in cold climates to insulate. Why is distilled water […]
How do I know when my electricity will come?
What is the hydrosphere made of?
What is the hydrosphere made of? The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet’s hydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers. It also exists below ground—as groundwater, in […]
What qualifications do you need to be an astrophysicist?
What qualifications do you need to be an astrophysicist? You would need a degree in astronomy or astrophysics. For entry, you generally need 4-5 Highers including Maths, Physics and usually another science subject. You then need to do specialist postgraduate study, usually a PhD, to get a post as a professional research astronomer. Does NASA […]