This week in science we prepared for the NJ ASK test. On Monday and Tuesday we saw a presentation on space and planets in our solar system. We learned the Sun is massive compared to the plantes like Pluto and our planet, Earth. The Sun is not massive, however, to the rest of the universe and the rest of space. Space goes on for millions and millions of light years.

On Wednesday we started learning about forces again. Two students from our class demonstrated an experiment for us.They both sat on carts and one held a bowling ball in his hands and threw it. The other student caught it and moved backward when he caught it. He threw it back to the first student and when he caught it, he moved backward. We learned that the student who threw the bowling ball excerted a force on it and the bowling ball excerted a force on the second student moving him backwards.

We also learned this week that of you hook two spring scales and two people pull on them with the same amount of force, they should read the same amount of Newtons. Some people might think they would both read 0 Newtons because they cancel each other out but forces can't eliminate another force even of it's the same amount.