Mrs. Brown's 5th grade class was asked to design a lunar lander that would safely land 2 astronauts on the surface of the moon. The astronauts must stay safely in the cabin when they land and the lander must stay upright. They will drop it from a height of 4 meters. They can ONLY use the materials provided, and will have 25 minutes to build. Please name one criteria and one constraint of this challenge?
Criteria: The astronaut must stay in the cabin.
Constraint: 25 minutes build time, only materials provided.
Action AA batteries last four times as long as Bonus AA batteries. Action AA batteries also cost four times as much as Bonus batteries. What is a good reason to buy Action AA batteries?
What is they generate less waste in the long run?
Why is it a benefit to do more than one trial in a science experiment?
Test results are 100% reliable and additional experimentation is needed.
A big rock is weathered over many years by a river, until only small pebbles remain. The mass of all the pebbles is less than the mass of the rock. The rest of the rock PROBABLY did this.
What is converted into soil?