Which type of materials that are on fire can you tackle using a normal water filled fire extinguisher? Standard water extinguishers Water extinguishers are only suitable for class A fires, which means they can fight fires that involve wood, cardboard, paper, plastics, fabric and textiles, and other solid materials. What kind of fire extinguisher do […]
Do bats bite sleeping humans?
Do bats bite sleeping humans? Even if you aren’t sure whether you’ve been bitten, seek medical attention. For instance, a bat that flies into your room while you’re sleeping may bite you without waking you. Why do vampire bats need to drink blood? And the vampire bats’ DNA contains tweaks to kidney function that allow […]
Which is the best example of Commensalism?
Which is the best example of Commensalism? remora What are 5 examples of Commensalism relationships? Examples of Commensalism Remora fish have a disk on their heads that makes them able to attach to larger animals, such as sharks, mantas, and whales. Nurse plants are larger plants that offer protection to seedlings from the weather and […]
What is the difference between sedimentary and igneous rocks?
What is the difference between sedimentary and igneous rocks? There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock (magma or lava) cools and solidifies. Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water. They accumulate in layers. What are […]
How does airplane wing work?
Can a balloon make it to space?
Can a balloon make it to space? A helium-filled balloon can float very high up into the atmosphere, however, it cannot float up into outer space. The balloon can only rise up until the atmosphere surrounding it has the same weight as the helium in the balloon. This happens at about a height of 20 […]
What is the relationship between heat and the density of air?
What is the relationship between heat and the density of air? As the molecules heat and move faster, they are moving apart. So air, like most other substances, expands when heated and contracts when cooled. Because there is more space between the molecules, the air is less dense than the surrounding matter and the hot […]
What are some drawbacks of a septic system?
Why do both bumper cars stop after crash?
Why do both bumper cars stop after crash? If kinetic energy before is the same as after, then the collision is elastic. Interactions between molecules are examples of perfectly elastic collisions. If two bumper cars collide head-on in a fairground and both cars come to a stop due to the collision, kinetic energy is obviously […]
How do you analyze student progress?
How do you analyze student progress? There are four main ways to track your students’ progress. Curriculum based monitoring tests. The teacher uses standardized tests that include all the material presented over the duration of the year. Observation and interaction. Frequent evaluations. Formative assessment. What factors do you think most contribute to student success? Family […]