Repetition and Replication

Scientists have MANY trials so their results are 

• countable
• graphable
• reliable
• hard to understand

When a another scientist does someone's experiment to see if the results are valid?

• repetition
• replication
• experimental method
• controlled variable

Dr. Smith has been reading about another scientist’s research in a physics journal. He plans to do these experiments himself and see if he gets the same result.

• repetition
• replication

Ryan is testing golf balls. He drops three different brands of balls from 40 cm and measures how high they bounce. He drops each ball 10 times.

• repetition
• replication

Which statement is necessary in order for a scientific investigation to be valid?

• The investigation must be able to be repeated by others.

• The investigation must produce data that can be graphed.

• The investigation must follow all the steps of the scientific method.

• The investigation must have a conclusion that matches the prediction.

What happens if the results of a scientist's experiment are NOT similar to the results gathered by other scientists doing the same experiment at a later date?

• The results of the experiment are changed by the scientists.

• The results of the experiment are published in scientific journals.

• The results of the experiment are questioned by the other scientists.

• The results of the experiment are accepted by the scientific community.

Repeat and Replicate, are basically the same thing.

• True

• False

If a student has to write this on the board 100 times, they have to ____________ the sentence over and over.

• repeat

• replicate

If a scientist, or student, does THEIR OWN experiment over 3 times to check their results, that is ______________.

• repetition (repeat)

• replication (replicate)

For replication, it's important to have an organized procedure to follow. Why is this a big deal?

• To ensure the results are consistent.

• If you get different results, you'll be in trouble.

• If you get paid to replicate, you have to follow directions.

• There are so different kinds of beakers, so it helps.