What is one way you can ensure good oberservations when you do scientific work

Positive feedback interactions in earth's systems are always a result of human action. T/F

Newtons second law of motion can also be described as what

What is the main source of groundwater? A. precipitation falling into man-made wells B. precipitation seeping through pores and cracks in the ground C. morning dew collecting on the surface of shrubs and grasses

A man is shot out of a cannon towards the center of an 80 foot long catching net 200 feet away. Unfortunately, the person in charge of aiming the cannon did not consider the crosswind.

If a substance is found to be reactive flammable soluble and explosive what observation is also a physical property

What trends were seen in Mendeleev's periodic table?

Through which medium would EM waves travel the fastest? A. The Ocean B. The Atmosphere C. Rocks

Average mass of a toy car (small, hot wheels) ?

A cannon directed straight upward launches a ball with an initial speed v. The ball reaches a maximum height h in a time t. Then, the same cannon is used to launch a second ball straight upward at a speed 2v.

Does the sun fuse hydrogen into helium or vice versa?