Earth Science NOS Lesson 3 Case Study Review

What is a variable in a scientific experiment?

• A fixed factor that never changes

• A factor that can have more than one value

• A tool used to measure temperature

• A constant in every experiment

Tags

NGSS.MS-PS2-2

What is the role of the independent variable in a controlled experiment?

• It is the factor that remains constant

• It is the factor that you want to test

• It is the factor that is measured during the experiment

• It is the factor that has no effect on the outcome

Tags

NGSS.MS-PS2-2

What unusual artifacts were found with the Iceman?

• A modern backpack and shoes

• A copper ax, a longbow, and arrows

• A digital watch and sunglasses

• A metal detector and a map

What are the two groups needed in a controlled experiment?

• Experimental group and control group

• Independent group and dependent group

• Test group and variable group

• Observation group and hypothesis group

How do scientific investigations often begin?

• By making a prediction

• By asking a question about something observed in nature

• By forming a hypothesis

• By conducting an experiment

Tags

NGSS.MS-PS2-2

How did the ax lead to a prediction about the age of the body?

• The ax was found near the body

• The ax was made of a rare material

• The ax's construction suggested it was at least 4,000 years old

• The ax was used in a ritual

Why did Professor Spindler conclude that the Iceman died in autumn?

• The Iceman was found with summer clothing.

• The Iceman's body was extremely well preserved due to ice and snow.

• The Iceman had a map of the mountains.

• The Iceman was carrying autumn leaves.

What steps are necessary before making conclusions according to the text?

• Guessing and assuming.

• Observing, revising hypotheses, and testing.

• Asking friends for their opinions.

• Reading books and articles.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

NGSS.MS-PS1-2

What materials did Professor Oeggl initially examine at the discovery site?

• Metal tools and weapons.

• Plant materials such as grass, wood, and fruit.

• Animal bones and fur.

• Rocks and minerals.

Why did Professor Oeggl want to study the Iceman’s digestive tract?

• To find out what the Iceman ate before he died

• To determine the Iceman's age

• To discover the Iceman's cause of death

• To learn about the Iceman's health conditions