Space
Earth's Surface Formation
The water cycle
Natural resources
Weather and climate
100

Can a star turn into a planet ?

Yes, it is possible for stars to turn into planets. But this happens for only a specific category of stars- called as brown dwarfs.

100

How did Earth and other planets form?

When the solar system settled into its current layout , Earth formed when gravity pulled swirling gas and dust in to become the third planet from the Sun.

100

How do plants give off water?

Through transpiration in their leaves.

100

1 way how to waste less water?

Turn the water off when your brushing you teeth then turn it back on when your ready to rinse your mouth.

100

What exactly is weather?

Weather refers to the state of the atmosphere.

200

Can gravity form waves?

Yes, gravity can forms waves. Gravitational waves are ripples in spacetime that travel through the universe. ... General relativity describes gravity as a warping or curvature of space and time

200

Why does Earth have plate tectonics and continents?

Earth's lithosphere broke into plates and developed dense roots that sunk into the mantle, and the pieces began recycling into the mantle via subduction zones.

200

What produces water vapor from plants?

Transpiration. 

200

A resource that is not easily replaced?

That is nonrenewable. 
200

what exactly is climate?

Climate, like weather, describes the state of the atmosphere.

300

What came before the big bang?

The initial singularity is a singularity predicted by some models of the Big Bang theory to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.

300

How did life begin ?

RNA, was the first molecule on Earth to self-replicate and begin the process of evolution that led to more advanced forms of life, including human beings.

300

What does evaporation change water to?

Water vapor.

300

What are the nonrenewable resources ? 

Natural gas, oil, and nuclear energy.

300

What is weather and climate?

Weather can change from minute-to-minute, hour-to-hour, day-to-day, and season-to-season. Climate, is the average of weather over time and space.

400

What is the difference between a meteor and an asteroid?

An asteroid is a small rocky object that orbits the Sun. ... A meteor is what happens when a meteoroid – a small piece of an asteroid or comet – burns up upon entering Earth's atmosphere, creating a streak of light in the sky. An asteroid is a small rocky object that orbits the Sun.

400

What is the deepest hole on earth?

The deepest hole on earth on earth is the Kola Well.

400

What are the major processes of water cycle?

Evaporation, Condensation, and Precipitation

400

Which group includes ALL renewable resources?

Ethanol, hydropower, geothermal power, wind energy, and solar energy.

400

What are the differences between weather and climate?

Weather describes how the atmosphere behaves over weeks or less. Climate is how it behaves over time periods of about a month or longer.