1. why do scientists use a standard measurement system?
2. what are the basic sl units of measure for length, mass, volume,
density, time, and temperature?
3. what are the common tools scientists use to measure length and
mass?
4. explain why the weight of an object is different on earth and the
moon even though the object's mass is the same in both places.
5. what formula do you use to determine the volume of a rectangular
solid?
6. why is an object's density expressed as a relationship between two
units?
7. what are two scales scientists use to measure temperature, and what
is the official sl unit for temperature?
building vocabulary
fill in the blank to complete each statement.
8. modern scientists use a system of measurement called the
international system of units, abbreviated as
9. the measure of the force of gravity acting on an object is called
10. the
system is a system of measurement based
on the number 10 and developed by scientists in the 1790s.
12.
11. the amount of space an object takes up is its -
is the measure of how much mass is contained
in a given volume.
13. when you measure liquid volume, you measure at the bottom of the
, the curve along the top of the liquid's surface.
- is a measure of the amount of matter in
an object.

Explanation:

1.Scientists use a shared system for reporting measurements called the International System of Units (SI). We use common measurement systems because science involves a lot of replication to confirm results. The most common system used in science is the metric system.

2.m, kg, m^3

3. g value change

answer: option (4) is the correct answer.

explanation:

areas which are at low altitudes and near the equator tend to receive direct sunlight from the sun. hence, heat energy or radiations from the sun make these areas warmer and they have warmest water.

whereas areas which are at high altitudes and away from the equator do no receive direct sunlight. hence, no direct contact from the sun makes these regions colder and thus, they have colder water.

thus, we can conclude that the statement areas at low latitudes near the equator have the warmest water because they receive the most direct sunlight best explains the relationship between an area's geography and the temperature of its surface water.

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.