What it the central idea of the text below?

Space is one of the most mysterious places in our world.  There is so much out there that we don’t know about.  Satellites take pictures for us of objects in space.  There are planets, solar systems, and so much more waiting to be discovered.

What it the central idea of the text below?

Transportation has changed a lot over the past few decades.  The early cars were much larger and didn’t go as fast.  Cars today are smaller and can go at higher speeds.  Also, cars today can do things such as have TVS, telephones, and even computers installed into them.

What it the central idea of the text below?

Weather is a crazy part of our world.  Some days the weather can be calm, beautiful and sunny.  Then other days we have rain, storms, snow and hail.  What we do everyday usually depends on the weather outside.

Which of the following sentences is a supporting detail to the central idea?

Elephants are huge in size.  They have big, flat feet that can be dangerous if you’re stepped on.  Their long trunks can be used for drinking water and for protecting themselves and their loved ones.  Their ears are also quite large and are used to help keep them cool in the hot sun.  They live in Africa so this is especially important for them!

Which of the following sentences is a supporting detail to the central idea?

Space is one of the most mysterious places in our world.  There is so much out there that we don’t know about.  Satellites take pictures for us of objects in space.  The biggest satellite is the Hubble.  There are planets, solar systems, and so much more waiting to be discovered.

Dolphins are one of the smartest mammals in the animal kingdom.  Because of this, they are able to do a lot of things that humans can do as well.  They are able to solve problems by using different tools.  They are also able to perform intelligence tests and always score very well.  They are great at developing communication because of their intelligence as well.

Central Idea: Dolphins are not the smartest mammals in the animal kingdom.

Scientists are not sure of all the causes of tornadoes.  Tornadoes happen when a cold wind high up meets warmer air and warmer winds lower down.  This causes the winds to swirl and the warmer air from below rushes upwards at terrific speed.  As the tornado moves forward, this warm wind rushing upwards can pick up any objects in its path.

 What is the central idea of this piece of text?

Shoo fly, don’t bother me! How do you know when a fly is nearby?  It’s that horrible buzzing sound!  But why do flies make that sound?  The buzzing noise.  Sometimes the buzzing is a high sound or lower sound because of how quickly the wings are flapping.  The faster the flap, the higher pitched the buzz.

How do fly's make their buzzing sound?

We would all love the flowers we plant last forever, but unfortunately that is not the case.  There are many reasons why flowers die.  One cause is improper care.  Flowers need a lot of attention to grow and prosper.  The includes getting the right amount of water and sunlight.  Another cause of a flower dying could be that they are watered too much.  Flowers need just the right amount to stay alive.  Finally, another cause is because they are planted in the wrong place.  Certain flowers can only grow in certain locations around the world.

 What is a supporting detail of the central idea as to why flowers don't last forever?

What does "Central Idea" mean?