What is survival of the fittest examples? In a habitat there are red bugs and green bugs. The birds prefer the taste of the red bugs, so soon there are many green bugs and few red bugs. The green bugs reproduce and make more green bugs and eventually there are no more red bugs. Who […]
What was the first step in the formation of the solar system?
What was the first step in the formation of the solar system? Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. The cloud collapsed, possibly due to the shockwave of a nearby exploding star, called a supernova. When this dust cloud collapsed, it formed a solar […]
How many compounds can carbon form?
How many compounds can carbon form? The four covalent bonding positions of the carbon atom can give rise to a wide diversity of compounds with many functions, accounting for the importance of carbon in living things. Carbon contains four electrons in its outer shell. Therefore, it can form four covalent bonds with other atoms or […]
Why are subtropical highs?
Why are subtropical highs? The warm air at the low latitudes rises and moves toward the poles. The rising air, and the subsequent clouds and precipitation, cause the tropics to be very wet. As the air moves towards the subtropics, it descends over the oceans and creates semi-permanent circulation features called subtropical highs. Where would […]
How much force does it take to push a shopping cart?
How much force does it take to push a shopping cart? A full shopping cart requires a force of 88.0 Newtons to move across a horizontal floor at a constant velocity. What are the forces acting on a shopping cart when a woman pushes it? Answer: 1. frictional force, static force, pressure, etc. What acceleration […]
What weather does a cumulus cloud bring?
What weather does a cumulus cloud bring? What weather is associated with cumulus clouds? Mostly, cumulus indicates fair weather, often popping up on bright sunny days. Though if conditions allow, cumulus can grow into towering cumulus congestus or cumulonimbus clouds, which can produce showers. What type of weather does a stratus cloud bring? What weather […]
What are 3 things a testable question needs?
What are 3 things a testable question needs? A testable question asks how one change (independent variable) has an effect on something else (dependent variable)….Scientific Questions = Testable Questions How does (IV) affect (DV) ? What is the effect of (IV) on (DV) ? What effect does (IV) have on (DV) ? Can you prove […]
Why are pencils so cheap?
Why are pencils so cheap? “If graphite is so expensive then how come pencils are so cheap?” Because the graphite core (commonly called “lead”, though it contains no lead at all) is not high-grade pure graphite, it is very inexpensive. Is graphite used in batteries? Graphite materials remain the dominant active anode material used in […]