interesting questions

Interesting Questions

Thought provoking facts is an app for kids and their parents, which make learning fun.
41. Which weapons were used by the Roman soldiers
The Roman Army was well trained to fight and defend themselves. They used swords, daggers and carried a long spear. They often wore shields and helmets for their safety.
42. Which was the biggest ever land animal
The biggest ever land animal was a dinosaur which belonged to the Sauropod family. Scientists have named it Amphicoelias fragillimus. This discovery was made by scientists who found the dinosaur's incomplete fossil.
43. Where did dinosaurs live
According to research, dinosaurs were present on all continents. But since very little information can be obtained from fossil data, nothing much can be said about them. Though traces of plants and animals have been found but it stil remains unclear.
44. What happened to the dinosaurs
During the last years of the Cretaceous Period, Earth became much cooler and drier. The dinosaurs could not adapt themselves to this environmental changes and became extinct. Many volcanic eruptions and asteroid attacks were also responsible for the climatic shift which also lead to the extinction of dinosaurs.
45. Which planet was found by an accident
Sir William Herschel accidentally discovered Uranus in 1791. Many astronomers had noticed this planet but misunderstood it to be a star. Sir William noticed that one star was different from the others and seemed much farther away from the Sun and Earth. The star was later named as Uranus.
46. Why is sea water salty
The combined presence of minerals salts, chemicals and dead remains of marine animals makes the water salty. Most of these minerals come from rivers and streams that add water to the sea, rainfalls, weathering of rocks below the sea. Also during evaporation process, pure water is evaporated from the sea and concentrated salt water is left behind. Thus the water remains salty.
47. How much high are waterfalls
Every waterfall has a different height. Angel Falls located in Venezuela is 3,212 feet high and is the highest waterfall in the world. In contrast, this is higher than two Empire State Building or the Burj Khalifa Towers. Its fall has a drop of 2,648 feet. Other notable waterfalls include the Waihilau Falls in Hawaii which is 2,600 feet high.
48. How are islands made
Islands are usually of two types - continental and oceanic islands. Continental islands are basically extensions of a continent that remain connected underwater along parent continent's coastline. Whereas Oceanic islands are formed when a volcanic activity or other disturbances take place on the ocean floor. These islands are thus pushed out of the ocean floor. United Kingdom and Japan are examples of continental islands whereas Hawaii is an oceanic island.
49. Which is the biggest ocean
The Pacific Ocean is the biggest ocean with an area of 165.2 million square kilometres and occupies about 33 percent of Earth's surface area. The pacific ocean is larger than all the land areas put together. The ocean covers from America to Asia and to Australia from the other side.
50. Which plants are found in seawater
A variety of sea grasses are found in sea water. These are rooted in the sandy sea beds and even bear flowers and cover wide expanses like a meadow. The plants have long and narrow leaves which are green. Since they need sunlight for photosynthesis, this grass is commonly found in lighted or photic sea zones or around the shallow and protected coastal waters. The plants add oxygen to the air and protect the shoreline from being eroded.