-- Coal
-- Oil
-- Natural gas
-- Falling water
-- Sunlight
-- Nuclear fission of Uranium
Answer:
Gravitational force is the force that attracts objects towards each other. Two factors that affect the gravitational force between objects are the mass of the two objects and the distance between
Explanation:
Gravity is what pulls us towards the Earth if we were to jump into the air, so it is the force that pulls things towards other things. The bigger the objects are the more gravity they have, so a planet has more gravity than say, an apple. Distance between objects also makes their gravity change, so the Earth's pull on the moon is different than the Earth's pull on the sun.
Hopefully this helps- let me know if you have any questions!
Answer:
Surface tension.
Explanation:
Water has this thing called surface tension, where the water, most of the time, is hard to split.
A few examples of surface tension in action:
- If you spill some water, you can see that they seem to connect together as if they were magnetic.
- You can put around 20-30 drops of water on average on a penny. This shows that water has better surface tension than other liquids, like oil, that can the penny can only hold around 10-15.
- Lastly, water bugs (which are kind of like mosquitos) can actually stay on top of the water, because they do not break the surface tension of it.
Hope this helps you!
