How many hours of sun does a north-facing garden get? You’ll get quite a bit at the height of summer, I should think about 7 hrs a day ime, central England latitude — more if you’re further north. Obviously at the ends of the day (morning, early evening. Good aspect for a conservatory (won’t get […]
How do you describe an irregular galaxy?
How do you describe an irregular galaxy? An irregular galaxy is the catchall name given to any galaxy that does not neatly fit into one of the categories of the Hubble classification scheme. They have no defined shape nor structure and may have formed from collisions, close encounters with other galaxies or violent internal activity. […]
Why is the corona hotter?
Why is the corona hotter? Nanojets are thought to be initiated by a process called ‘magnetic reconnection’, where twisted magnetic fields explosively realign. One such reconnection can set off another, resulting in an avalanche of nanojets in the Sun’s corona, which is then thought to generate enough energy to heat the corona. What triggers lightning? […]
What does the L mean on a weather map?
What does the L mean on a weather map? low pressure What symbols are commonly found on a weather map? These often include temperature, dew point (a measure of humidity), wind speed, wind direction, present weather, barometric pressure and pressure tendency (is it rising or falling?), cloud cover, and many others. What is a key […]
What is the formula for capacitance of a capacitor?
What is the formula for capacitance of a capacitor? The generalised equation for the capacitance of a parallel plate capacitor is given as: C = ε(A/d) where ε represents the absolute permittivity of the dielectric material being used. How can you increase the capacitance of a parallel plate capacitor? The capacitance of a set of […]
What is the power of an appliance?
What is the power of an appliance? The power of an electrical appliance tells us how much electrical energy it transfers in a second. Power, P is measured in watts (W) where: 1 W = 1 J/s (joule/second). Appliances used for heating have a much higher rating than those used to produce light or sound. […]
Why does a straw look bigger in water?
What element is a good insulator?
What element is a good insulator? Examples of good conductors are sliver, tin, and lead. Good insulators contain 8 electrons which mean they are stable(noble gasses group 18). Insulators can’t be easily transported from one atom to another and nonmetals make good insulators. Three examples of good insulators are sulfur, silicon, and rubber. What makes […]
What are the features of a sedimentary rock?
What are the features of a sedimentary rock? Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed. What type of minerals are found in […]
Is thermal energy the total kinetic energy of an object?
Is thermal energy the total kinetic energy of an object? Thermal energy is the total internal kinetic energy of an object due to the random motion of its atoms and molecules. It is sometimes confused with internal energy or thermodynamic energy. They consist of the sum of the internal kinetic energy (thermal energy) and the […]