Unit 2 Review

Vocab

100

core

the center of the sun

200

sun spots

ares of gas on the sun's surface that are cooler than the gasses around me

300

convection vone

the outermost layer of the sun's interior

400

photosphere

the layer of the sun's atmosphere that gives off visible light

500

chromosphere

the layer of the sun's atmosphere that has a reddish glow

Atomic Structure

100

what's the center of a atom?

the nucleus

200

what is nuclear fusion?

The process that produces energy in a star.

300

what is a isotope?

Two or more atoms with the same number of protons, but different neutrons 

400

what is atomic number?

Used to identify the name of the element found on the periodic table.

500

what is a electron?

Negatively charged particles in an atom. Number of these particles equal number of positive charge.

Nuclear Fusion

100

Is mass lost or gained during fusion?

Lost

200

What happens to the mass lost during fusion?

It becomes energy

300

_ Hydrogen atoms combine to make _ Helium atoms

1 , 2

400

what happens to the mass of the atoms during fusion?

mass increases

500

where does nuclear fusion occur in stars?

The nucleus 

Dimensional Analysis

100

Convert 46 inches into meters

1.17

200

How many feet are in 100 miles?

528000

300

How many minutes are in 6 years?

3155760

400

Convert 25 years to hours

219150

500

convert 65 milliliters into inches

3.97 inches

Scientific Notation

100

5.5x10²

550

200

4.6x10²

460

300

2.123x10³

2123

400

3.67x10⁵

367,000

500

5.45x10⁶

5,400,000