Please help me out with simple chromosome/chromatid counting

I'm very confused about chromosomes and their replication.
Is this picture considered a duplicate/replicated chromosome?
http://www.cyberscience3d.com/store/index.php/biology/chromosome.html
How many chromosomes is this considered to be - one or two?
After a chromosome is replicated, is it considered one or two chromosomes?
Is a chromatid the same as a single, nonreplicated chromosome?
Can a nonreplicated chromosome be divided during cell division?
What are homologous chromosomes?
When a human has 46 chromosomes, is this replicated or nonreplicated chromosomes???

I know this is a lot of questions, but I have a test tomorrow and I'm really confused. Thanks so much :)

That picture is of a replicated chromosome. It is 2 chromatids, but is considered to be 1 chromosome. As long as the sister chromatids are connected at the centromere, like these are, it is considered only 1 chromosome; once the centromere is replicated and the chromatids separate, they are individual chromosomes.

Homologous chromosomes are chromosomes with the same arrangement of genes; they make up a pair. We get one homologue from each of our parents.

The 46 chromosomes refer to the non-replicated (indivdual) chromosomes.