Rocks
Physical and Chemical changes
Soil
Conductivity
Bonus
100

What are the three main types of rocks?

Igneous, metamorphic and sedimentary rocks

100

Is cutting a carrot a physical or chemical change?  

Physical. It changes the size and shape, but the carrot is still a carrot.

100

Three main types of soil

clay soil, loam and sandy soil

100

Which is a better heat conductor, silver or gold?

Gold

200

 What makes different minerals and rocks have different colors or shapes?

Free points people who wrote an answer


200

What happens in solidification?

Solidification is the transformation of liquid to solid, such as the formation of ice.

200

Which soil has very small particles that are very tightly packed?

Clay soil

200

Why could your hand get burnt if you stirred hot soup with a metal spoon?

Because metal is a good heat conductor.

300

give two examples of metamorphic rocks

marble and gneiss (etc.)

300

What  is a chemical change?

It is a change that is irreversible and it creates a new substance. 

300

Describe two ways that organic farmers use to maintain the composition of their soil

Two ways organic farmers maintain soil composition are through crop rotation and adding organic matter like compost. 

300

Why do most wires use copper instead of gold?

Most wires use copper instead of gold because it is much cheaper.

400

What is the rock cycle?

The rock cycle is the continuous process by which the three major rock types—igneous, sedimentary, and metamorphic—are created, transformed, and destroyed by Earth's internal and external forces. 

400

Boiling point of water is?

100 °C

400

How is soil formed, and what are the five soil-forming factors?

 (Climate, parent material, topography, organisms, and time)

400
What is conductivity? 


It is the power to transfer energy through an object



500

Why are some rocks rough and others smooth?

I have no idea :) 

500

Is a candle burning a physical or chemical change?

 Chemical

500

How long does it take for soil to form?  

 (It can take hundreds of years to develop just a few centimeters of soil)

500

Is wood a good conductor or a bad conductor?

A bad conductor

500

What is general relativity and quantum mechanics into a single theory of quantum gravity?

Albert Einstein couldn't solve it, so yeah, quit life!!!!!!!!!!

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