Nature of Science
Human Impact
Plate Tectonics
Earth's Layer
Earth in Action
100

What is the term for a testable explanation for a scientific question?

What is a hypothesis?

100

Cutting down trees for buildings or farms is called what?

What is deforestation?

100

What theory explains how Earth’s plates move?

What is the theory of plate tectonics?  

100

What is the outermost layer of the Earth?

What is the crust?

100

What natural event happens when rocks suddenly break and release energy underground?  

What is an earthquake?

200

What do scientists use to organize and analyze data from an experiment?

What is a graph or data table?

200

What is the process where fertile land becomes desert?

What is desertification?

200

What is the name of the supercontinent that existed millions of years ago?

What is Pangaea?

200

Which layer is made of molten rock and causes tectonic movement?

What is the mantle?

200

How can human activities like mining affect Earth’s land?

They can cause erosion, sinkholes, or habitat destruction. 

300

What is the difference between an observation and an inference?

An observation is what you notice; an inference is what you think it means.

300

What are renewable resources?

Resources that can be replaced naturally, like trees or water.

300

What happens at a transform boundary?

Plates slide past each other.

300

What are the two parts of Earth’s core?

The inner core and outer core

300

What layer of the Earth do tectonic plates float on?

What is the mantle?

400

What is a variable that is changed by the scientist in an experiment?

What is the independent variable?

400

What is the release of harmful substances into the air, water, or soil called?

What is pollution?

400

What landform forms at a convergent boundary between oceanic and continental plates?

A volcanic mountain range.

400

Which layer is solid and made mostly of iron and nickel?

What is the inner core?

400

How do convection currents in the mantle affect Earth’s surface?

They move tectonic plates, causing earthquakes and volcanoes.

500

What is the purpose of repeating an experiment multiple times?

To make results more reliable and accurate.

500

What gases trap heat in Earth’s atmosphere and contribute to global warming?

What are greenhouse gases (like carbon dioxide and methane)?

500

What is the driving force behind plate movement?

Convection currents in the mantle.

500

Which layer is broken into tectonic plates?

What is the lithosphere?

500

What type of boundary forms when two plates move away from each other?

What is a divergent boundary?