How do scientists use sonar to study earth's oceans?

to measure water density

to measure underwater earthquakes

to map ocean currents

to map the ocean floor

1) Which type of radioactive emission has a positive charge and weak penetrating power? A) alpha particle B) beta particle C) gamma ray D) neutron

A blacksmith making a tool heats 525 grams of steel to 1230C. After hammering the steel, she places it into a bucket of water to cool it. When she removes the steel from the water, it's a 50C.

In the preindustrial era, settlements were more likely to be near sources of surface water than in the industrial era.

List 2 potential negative impacts that extraction of gold has on the environment?

Which of the following pairs of elements is/are likely to form an ionic bond? Choose one or more: A. Na and F B. Ca and Cl C. H and H D. Cl and Br E. K and I F. N and C

What happens when a firework is ignited?

The spines and thick wavy cuticle on a cactus are both what

What type of chemical process is used to create perfume?

Which of the following is a polyatomic ion? O A. HCI O B. Na O C. PO, O D. 52

What are the cations and anions for V2 (CO3) 3