What are 5 examples of physical activity? Some examples of physical activity are: Going for a walk, bike, or run (join our indoor walking program). Doing household chores. Taking the stairs instead of the elevator. Playing at the park. Raking leaves or shovelling snow. What are the examples of moderate physical activity? Examples of moderate […]
What is the difference between control variable and independent variable?
What is the difference between control variable and independent variable? Independent variable – the variable that is altered during a scientific experiment. Controlled variable – a variable that is kept the same during a scientific experiment. Any change in a controlled variable would invalidate the results. What is the different types of variables? Parts of […]
Are the layers still horizontal or are they bent Why?
Are the layers still horizontal or are they bent Why? Answer. Answer: Figure 10.6: Rocks that were originally deposited in horizontal layers can subsequently deform by tectonic forces into folds and faults. Folds constitute the twists and bends in rocks. How is horizontal unconformity formed? An angular unconformity is an unconformity where horizontally parallel strata […]
What 3 types of EM waves are dangerous to humans?
What 3 types of EM waves are dangerous to humans? The most dangerous frequencies of electromagnetic energy are X-rays, gamma rays, ultraviolet light and microwaves. X-rays, gamma rays and UV light can damage living tissues, and microwaves can cook them. How long does it take for gamma rays to kill you? Most deaths occur within […]
How does heat transfer from one object to another and why does it generally flow from the hotter the colder object?
How does heat transfer from one object to another and why does it generally flow from the hotter the colder object? Thermal conduction involves energy in the form of heat being transferred from a hot region to a cooler region through a material. At the hotter end the atoms, molecules, and electrons vibrate with more […]
What is the main cause of ozone depletion?
What is the main cause of ozone depletion? Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below). CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone’s ultraviolet radiation-absorbing capacity. Is inhaling ozone bad? Whether in its pure […]
Does your little toe help you balance?
Does your little toe help you balance? Your toes play an important role in keeping you balanced as you move, whether you’re barefoot or wearing shoes. Your pinky is the smallest toe, but it’s crucial in helping you to maintain your balance. It helps to think of your foot as having a triangular base of […]
Do forces have direction?
Do forces have direction? A force is a vector quantity. As learned in an earlier unit, a vector quantity is a quantity that has both magnitude and direction. Because a force is a vector that has a direction, it is common to represent forces using diagrams in which a force is represented by an arrow. […]