ÔùÖ Beauty with a Purpose ÔùÅ Why do some insects visit flowers? ÔùÅ Why do plants bloom at certain times of the year? ÔùÅ What is the world's largest flower like? ÔùÅ Do flowers have different sexes? ÔùÅ How do tulips open and close? ÔùÅ Do grass plants have flowers?rnrnÔùÖ Fruits and Seeds ÔùÅ How do flowers make fruit? ÔùÅ Can figs grow without flowers? ÔùÅ W…
ÔùÖ Plant Cells and Growth ÔùÅ What is inside a plant cell? ÔùÅ How does a plant make seeds? ÔùÅ How do plants use sunlight? ÔùÅ What causes seeds to sprout? ÔùÅ How do roots grow? ÔùÅ How do stems and leaves grow?rnrnÔùÖ Roots and Stems ÔùÅ How does water get to a treetop? ÔùÅ Why do some roots grow above ground? ÔùÅ How do growth rings in trees form? ÔùÅ Wh…
ÔùÖ When Dinosaurs Ruled ÔùÅ What were early reptiles like? ÔùÅ What were mammal-like reptiles? ÔùÅ Where did dinosaurs come from? ÔùÅ What were the first birds? ÔùÅ What was Archaeopteryx like? ÔùÅ How did mammals evolve? ÔùÅ Hoe were dinosaurs related? ÔùÅ What did dinosaurs eat? ÔùÅ Did dinosaurs lay eggs? ÔùÅ Cold - or warm - blooded? ÔùÅ Were dinosaurs s…
ÔùÖ The Evolution of Species ÔùÅ What does evolution look like? ÔùÅ How many species are there? ÔùÅ What is a species? ÔùÅ What is the theory of evolution? ÔùÅ What is natural selection? ÔùÅ Do mutations lead to evolution? ÔùÅ How do breeding and evolution differ? ÔùÅ What is adaptation? ÔùÅ How do species differentiate? ÔùÅ What is macroevolution?rnrnÔùÖ Whe…
ÔùÖ Stars ÔùÅ Why do stars have colours? ÔùÅ Why are some stars very bright? ÔùÅ What are variable stars? ÔùÅ What is a supernova? ÔùÅ What is a nebula? ÔùÅ How did the Pleiades cluster form? ÔùÅ Do the constellations change? ÔùÅ What influences stars' lifetimes? ÔùÅ What is a black hole? ÔùÅ What are neutron stars?rnrnÔùÖ Galaxies and the Universe ÔùÅ Wha…
ÔùÖ The Solar System ÔùÅ How did the Solar System begin? ÔùÅ Why is Mercury's surface cratered? ÔùÅ What kind of planet is Venus? ÔùÅ Does Mars show signs of life? ÔùÅ What is Jupiter's Great Red Spot? ÔùÅ Could Jupiter have become a star? ÔùÅ How did volcanoes form on lo? ÔùÅ How were the rings of Saturn formed? ÔùÅ Is there life on Saturn's moon Titan? ÔùÅ Why…
ÔùÖ The Chemistry of Food ÔùÅ Why does a sliced apple turn brown? ÔùÅ Are all sour foods acidic? ÔùÅ How is yoghurt made? ÔùÅ How is instant coffee made? ÔùÅ How are food preserved? ÔùÅ What is monosodium glutamate? ÔùÅ Why is ice cream softer than ice? ÔùÅ Why do boiled eggs become hard? ÔùÅ How is salt reclaimed from the sea? ÔùÅ How is drinking water purified…
ÔùÖ The World of Matter ÔùÅ Is anything smaller than an atom? ÔùÅ How big are atoms? ÔùÅ What are the elements? ÔùÅ What are fibres made of? ÔùÅ How does nuclear fission happen? ÔùÅ What is nuclear fusion? ÔùÅ How does salt conduct electricity? ÔùÅ How do colloids form? ÔùÅ What is antimatter? ÔùÅ How are fossils dated? ÔùÅ What is the nitrogen cycle? ÔùÅ …
ÔùÖ Atmospheric Pressure ÔùÅ What is a high-pressure system? ÔùÅ What is a low-pressure system? ÔùÅ What causes heavy downpours? ÔùÅ Why do typhoons occur? ÔùÅ How do typhoons develop? ÔùÅ How are typhoons observed?rnrnÔùÖ Wonders in the Sky ÔùÅ What is a rainbow? ÔùÅ What are mirages? ÔùÅ How do solar and lunar halos form? ÔùÅ What causes mountain halos? ÔÃ…
ÔùÖ The Air Above ÔùÅ How did the atmosphere form? ÔùÅ How is the atmosphere divided? ÔùÅ Where does the atmosphere end? ÔùÅ What is the ozone layer? ÔùÅ What is the ionosphere? ÔùÅ What causes the aurora? ÔùÅ What are the Van Allen belts? ÔùÅ Why doesn't the sun burn Earth? ÔùÅ Why is the sky blue during the day but red at sunset? ÔùÅ Why is it colder on mounta…