Erosion
What are the two forces that can wash sand away?
Waves and wind can both wash sand away.
What does a tornado look like?
It is shaped like a funnel.
What is energy?
Energy is the ability to do work.
What is a cycle?
A cycle is when something happens continuously and never stops repeating itself.
There are three zones in the ocean. How are they divided into three zones?
The oceans are divided into three zones based on depth and light level.
What is erosion?
Erosion is when wind or water changes the shape of the Earth.
How is a tornado born?
When high winds spin and touch the ground, a tornado is born.
Why do we require a lot of energy?
We require energy to heat our homes, run our cars, and light our cities.
In what way is a cycle like a circle?
A cycle has no beginning and no end, just like a circle.
What are the three zones in the ocean?
They are the sunlight zone, the twilight zone, and the midnight zone.
What can happen to buildings when a beach is eroded?
When a beach is eroded, the nearby buildings could be completely washed away.
From what kind of weather do most tornadoes begin?
Most tornadoes begin as a kind of weather called a thunderstorm.
How are fossil fuels formed?
Fossil fuels are formed from plants. Over time, plant remains change into coal, oil, and natural gas.
What type of energy changes liquid water into vapor?
Solar energy, which is the heat from the sun, changes liquid water into water vapor.
What percent of ocean life lives in the sunlight zone?
About 90 percent of ocean life lives in the sunlight zone.
How does cliff erosion happen?
Waves hit the bottom of the cliff and break off tiny pieces of rock. Over time, this weakens the top of the cliff and causes it to crumble into water.
Where do most tornadoes form?
Most tornadoes form in the middle of the United States.
What is the wheel connected to when transferring energy from a bike?
The wheel is connected to a generator.
What is evaporation?
Evaporation is when liquid water turns into a gas called water vapor.
Why do animals in the twilight zone have big eyes?
They have big eyes to see better in the dark waters.
How do people work together to stop erosion?
People work together to build walls in the ocean to stop strong waves from reaching the beach. They also make new rules to stop buildings from being built on beaches.
Where could be the right shelter from tornadoes?
A basement or a room without windows could be the right shelter from tornadoes.
How can we get energy from fossil fuels?
We can get energy we need by burning fossil fuels.
What are four ways water comes back down to Earth?
Water comes back down to Earth as rain, sleet, snow, or hail.
Does sunlight get to the midnight zone?
No, it doesn't. It gets no sunlight at all so only 1 percent of ocean animals live in this zone.