These are posts from our whatsapp groups for Homi Bhabha Exam students – Activities and experiments for young scientists:
I. Metals & Non metals
Observe and identify objects made up of iron, stainless steel, copper, aluminium, brass.
Do we use any non metal? Where?
II. Answer the following:
- Give examples of metalloids
- Give 5 properties of metals
- Classify: Metals/ NonMetals – Iron, Sodium, Potassium, Calcium, Oxygen, Carbon, Sulphur, Chlorine,
- Give an example of a liquid metal
- Give an example of a liquid non-metal
- Bronze is an alloy of what?
- What is allotropy? Write allotropes of phosphorus.
III. Insects and Non-insects
Find and observe insects in your surroundings, Take their photos.
Find a spider and observe it. Is a spider an insect?
Beautiful insects and non-insects clicked by our young experimenters!
IV. Strong metals video
We have studied about strong (very reactive) metals at our Homibhabha class. Observe the following video. Show this video to your friends and parents.
Some snapshots from the video –
Write the names and properties of these metals.
Which is the most reactive metal? What did it react with in the video?
V. Animal Classification:
- Classify into: Unicellular, Multicellular-Invertebrates, Multicellular-Vertebrates:
Earthworn, Snake, Frog, Butterfly, Amoeba, Bacteria, Shark, Ant, Human, Penguin
- Give examples of animals with many legs but not insects.
- Which vertebrate animal can breathe by moist skin?
- Classify into: Fish, Bird, Amphibian, Reptile, Mammal –
Dolphin, Turtle, Frog, Snake, Penguin, Dinosaur, Duck, Tiger, Shark, Whale
VI. Amoeba Video:
Some animals like amoeba, paramecium are made up of only one cell. So they do not have mouth or any organs as we do. They are visible only under microscope.
They eat food through skin (cell membrane). This is called phagocytosis.
Observe the video: Amoeba eating two paramecium.
VII. Octopus Video:
Octopus has soft body and no bones. So it can squeeze from a small hole. It is an invertebrate. Observe the video.