What is a variable?

O

A. A summary of another scientist's work

O

B. An educated guess about the outcome of an experiment

O

C. Something that can change during an experiment

O

D. The analysis of the results of an experiment

What are scientists who study space called?

What are two ways thermal energy can be increased in a system?

What is the part of the cell that stores food?

Define speed. 1. a change in direction 2. distance an object moves in a given time 3. the work done 4. time an object moves

A ray of light in air strikes the flat surface of a liquid, resulting in a reflected ray and a refracted ray.

Two 8 ohm resistor in parallel

After a quick review of the textbook, rank the following elements in order of increasing density: (A) copper, (B) nickel, (C) titanium, (D) silicon.

How much power is expended if you lift a 60 n crate 10 meters in 1 second? a. 0 w b. 6 w c. 10 w d. 60 w e. 600 w?

In the Copper Plating Solution lab, you placed copper (Cu) pennies in vinegar. Vinegar is a weak acid with hydrogen ions (H+). When you put the pennies in the vinegar, you should have observed small gas bubbles.

Gravity decreases with distance. Which statement is also true? Orbital speed increases with distance. Orbital speed decreases with distance. Orbital speed remains constant with distance. Orbital speed varies based on the functions of friction.