A scientist performs an experiment and asks other scientists around the world to replicate it.

Why would other scientists most likely try to perform the same experiment?

• to find out if weather of various regions of the world would affect the results

• to see if the experiment would be less expensive in another part of the world

• to confirm the results of the experiment conducted by the scientist

• to verify that the hypothesis of the experiment is a scientific law

A scientific hypothesis is ________________

• a guess

• a proposed explanation that can be tested

• the correct answer to a question

• another important opinion in science

If Mr. X tried to sell you a $900 product with the claim it "cured all illnesses," you should __

• buy all of it and sell it for a profit

• ask him if he would let you work for him

• ask for more data and evidence to support his claim

• buy 1 bottle and try it out on yourself

When your classmate copies an experiment that you have already conducted it is called _____

• restitution

• replication

• repetition

• cheating

Which is an example of a model?

• the globe of Mars

• paper

• an olive

• your textbook

Which of the following is a scientific observation? 

• The potato is brown in color.
• The potato tastes the best.
• The potato may cause allergies.
• The potato smells funny. 

What is another word for hypothesis?

• evidence
• graph
• investigation
• prediction

A scientist is collecting data on the number of times a cricket chips per minute. What sense is the scientist most likely using to make observations?

• hearing
• smell
• sight
• touch

Tags

NGSS.MS-LS1-8

Which question can best be investigated by a scientist?

• Should I buy a red shirt or a green shirt?
• Does chocolate milk or plain milk taste better?
• Does a plant need sunlight to grow?
• Which feels softer, cat fur or dog fur?

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Why should an experiment be repeated?

• to form a hypothesis
• to reduce the chance of error
• to change controls
• to identify the problem

Tags

NGSS.MS-PS2-5