Chem Unit 1 HW #1 WayG Video

The official position of the WHO (World Health Organization) on wearing masks changed dramatically in the early months of the COVID-19 pandemic.

• True

• False

What usually inspires a scientific investigation?

• an experiment

• a hypothesis

• an observation

• a conclusion

A hypothesis is, essentially, ​ (a)   suggestion and description of what might be going on in a situation.

• a reasonable
• an illogical
• a random
• a perfectly correct

In the past, scientists shared their discoveries by writing letters to a few other scientists.

Today, they publish their findings in ​scientific (a)   that are ​reviewed and critiqued by scientists around the world.

• journals
• diaries
• blogs
• textbooks
• posts

Does anyone else examine a scientific claim before it is published in a journal?

• No. The scientist can post findings of their own work and be accepted immediately.

• Yes. The scientist's mentor checks it and publishes it if it looks good.

• Yes. Other researchers in that scientist's lab peer-edit it before publication.

• Yes. Other scientists examine the work and inform the publisher if the research seems valid or not.

What term is used when a scientific journal announces that something it published may not be reliable and requires further study after many scientists who read it question the mtheods, data, or conclusions?

• an audit

• a retraction

• a revision

• a mistake

Scientific explanations are always absolutely correct the first time they are developed and presented.

• True

• False

Which statement is the better description of science?

• Science is linear. Every observation can be tested easily to produce clear-cut data and concise conclusions.

• Science is an intricate process. Data can lead to new questions, and making a mistake is an opportunity to learn and start again.

• Science is absolute. Once a theory is developed it is accepted as truth forever.

• Science is unreliable. People make mistakes, so no one can be trusted to know anything.