Why do things expand when heated?

Answer : When you heat solids, liquids or gases, they expand because the molecules start moving faster. To move fast, they need more space, so they expand.

What is arthralgia and Treatments?

Answer: Arthralgia  means pain in joint or pain in a joint.  

How does the liver work?

The liver is not a part of the digestive tract, but it plays a vital role in digestion. It releases A substance called bile that helps to break down fat. The liver also stores excess fat for later use.

What is an electron and what keeps its mass and charge together so that when the mass moves, the charge moves with it?

What is an electron and what keeps its mass and charge together so that when the mass moves, the charge moves with it?

Is critical mass the same for all fissionable materials?

Is critical mass the same for all fissionable materials?

A charge coupled device converts light (photonic energy) into electric energy. What is the underlying mechanism that makes this happen?

A charge coupled device converts light (photonic energy) into electric energy. What is the underlying mechanism that makes this happen?

What is symbiosis

What is symbiosis

What is Symbiosis Living things that feed off other living things are called parasites. Living things that depend on each other to live are called symbiotic. Many tropical rainforest trees have a symbiotic relation with fungi on their roots. The fungi get energy from trees and return give the trees phosphorus and other nutrients. Leaf […]

Types of Radiation & Meaning

Types of Radiation & Meaning

What is Radiation Radition is an actom’s way of getting rid of its excess energy. Particulate Radiation comes mainly from radio active substances such as radium, uranium and other heavy elements as they break down. Radiation is Measured in curies and becquerels. Bacteria can stand a radiation dose 10,000 times greater than the dose that […]

Plant & Animal Cells Staining Lab Answers

Plant & Animal Cells Staining Lab Answers

Purpose The purpose of this lab is to learn how to prepare a wet mound, to learn proper staining techniques and to examine human cheek cells and onion skin cells. Hypothesis It is predicted that all cells, no matter if it be plant or animal, will be in beside each other in large groups, that […]

Pedophilia: Causes & Types

Pedophilia: Causes & Types

Perhaps no single act causes such strong emotions as the act of child sexual abuse.  Child   molesters cannot even find refuge in prisons where rapists and murderers are commonplace. These offenders are shunned in every aspect of our society, yet there is no consensus as to the causes of this behavior.Sexual abuse of children […]