Which of the following best describes Earth’s shape? A. disk B. circle C. sphere D. plane
Earth’s gravity pulls an object toward its ____________________.
Which model do you find most useful to explain gravity and its effects? Why? - Tennis ball and rubber band? - Styrofoam ball and toothpicks? - Circle on paper with arrows?
Why are models helpful at explaining complex scientific concepts like gravity?
Do you think the moon is affected by Earth’s gravity? If so, why doesn’t it fall “down” toward the Earth?
Why doesn’t a plane or bird fall from the sky?
Does gravity ever stop working? Do any forces ever cancel out gravity or reverse it? Explain.
Why is this lesson on gravity a good time to teach about craters?
The Earth is a sphere. Not a circle, because if it was a circle then Earth would be completely flat.
Earth's gravity pulls to its core. The core is the middle of Earth.
I think the tennis ball and rubber band are best for a model because if you are the rubber band you'll get pulled down if you jump up.
I think that models help because you can visually see what's happening infront of you. That always helps me.
The moon is in the gravitational force of Earth. It doesn't go to the core, it orbits around Earth.
Planes and birds don't fall because their wings can create lift allowing them to fly. Also for birds they are light and flap their wings to keep them flying.
There is so way for gravity to stop working, except when you are out of Earth's gravitational force, otherwise, we'd be flying all over. It can't be canceled out either.
I think it's a good time to teach about craters because craters are made from astroids and whatever hitting the surface leaving a large dent. The thing that pulls them in is gravity, gravity can also make the impact more powerful.