Page 4 - Class VI Activities Forces and Energy

Subtopic: 3.4 Tides

Ac+vity: Inves+ga+ng +des

Learning Objec+ve:- To show the posi)ons of high and low )des on Earth rela)ve to the posi)ons
of
the Moon and the Sun.

Materials required:- Card or paper, pencil/pen for labeling, some circles to draw around, scissors

Procedure:-

1. Cut out 3 circles of different sizes and label them:- Small = Moon, Medium = Earth, Large =
Sun (set aside for now)
2. Cut out 4 crescent shapes and label them:- 2 thin crescents = Set 1, 2 thicker crescents = Set
2
3. Place Earth and Moon on a flat surface (not to scale, just a few inches apart)
4. Use Set 1 (thin crescents): Place one on each side of the Earth.
5. Deepest parts of crescents should face toward and opposite the Moon.
6. Observe the model: It shows high )des on both sides of the Earth.
7. Areas at 90° have low )des.
8. Use Set 2 for spring )de demonstra)on
9. Reintroduce Sun to discuss spring and neap )des.

Conclusion:- Tides on Earth are caused mainly by the Moon’s gravita)onal pull, which creates
two high )des—one facing the Moon and one on the opposite side.

Assessment Ques+ons:-
1. What causes )des on Earth?
2. Why are there two high )des on Earth at the same )me?
3. What do the crescent shapes in your model represent?
4. What would happen to )des if there were no Moon?
5. How might the Sun also influence Earth’s )des?

4