Curiopedia - Page 11 of 34 - Young World Club
Back

Curious Questions from Curious Minds!

Welcome to Curiopedia, where imagination and discovery take shape! Discover something new today with these curious questions from children. Click on the ‘View Answer’ button to find out the answer! If you want your (child’s) curious question answered and featured here, submit it now.

Submit Question

  • Harnessing the sun’s energy

    How do solar panels work?

    B. Ashrith , Rajahmundry, Andhra Pradesh

    Solar panels installed on the roof of a house capture energy from the sun. They can even work on cloudy days when the sun isn’t visible. They cannot provide a home with power at night, so, most people still have to remain connected to the National Grid (this is where you get your electricity from). There are a few steps involved. First, the sun shines on the solar panels which absorb the energy, creating direct current (DC) electricity. Next, the electricity is fed into a solar inverter which converts the current into alternating current (AC) electricity. Then, the AC is used to power the appliances in your home. Any power that your home does not use gets sent back (or sold) to the National Grid, for others to use.
    View Answer Hide Answer
  • Star clusters

    How does a constellation form?

    Aarohi Singh , Secunderabad, Telangana

    Constellations are formed by bright stars which appear close to each other in the sky, but are really far apart in space. The shapes you see depend on your point of view. Many societies saw patterns among the stars, with gods and goddesses or stories from their culture. Most of the constellations with which we are familiar come from ancient Greece. But other civilisations created their own patterns in the sky based on stories and people that were important to them. Many people noticed that the planets, moon, and comets moved through the sky differently from stars. Because of the rotation of the Earth and its orbit around the Sun, we divide the constellations into two groups. Some constellations never rise or set. They are called circumpolar. The rest are divided into seasonal constellations.
    View Answer Hide Answer
  • True blue?

    Why does an octopus have blue blood?

    Rachel Shajy John , Chennai, Tamil Nadu

    Not only octopus, even squids and a few other invertebrates have blue blood. This is because unlike humans who use haemoglobin, these invertebrates use a different protein called hemocyanin. This protein relies on copper, rather than iron (as we do), as the binding mineral of choice. When copper binds with oxygen, the resulting colour is blue. And, just adding more colour to life, the Papua New Guinea skink has green blood. This is because it breaks down used haemoglobin into constituent parts (bilirubin and biliverdin) which interact with blood to give it a green colour!
    View Answer Hide Answer
  • In matters of safety

    Why do medicines have an expiry date?

    Mohammad Wasib , Hyderabad, Telangana

    Drug manufacturers are required to stamp an expiry date on their products. This is the date on which the manufacturer can still guarantee the full potency and safety of the drug. It is safe to use within the time prescribed. After the expiry date medicines may not be safe or as effective. Also, medicines have to be stored the as recommended on the packaging or leaflet.
    View Answer Hide Answer
1 9 10 11 12 13 34
preload imagepreload image
February
January
February
March
April
May
June
July
August
September
October
November
December
2025
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
SunMonTueWedThuFriSat
26
27
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
12:00
13:00
14:00
15:00
16:00
17:00
18:00
19:00
20:00
21:00
22:00
23:00