Four mystery atoms (Q,R,S & T) are shown below. How many neutrons does each atom have?
_______
_______
_______
_______
Which of the four atoms are the same element?
_______and _______
2 points
2
Question 3
3.
Nuclear fusion occurs when __________________.
2 points
2
Question 4
4.
Nuclear fission occurs when __________________.
2 points
2
Question 5
5.
What happens to the nucleus of an atom that undergoes alpha decay?
1 point
1
Question 6
6.
An isotope is shown below. Which of the following changes would result in the isotope osmium-186?
1 point
1
Question 7
7.
Fill in the missing isotope symbol. You can type or draw.
4 points
4
Question 8
8.
Describe how the carbon-14 nuclei changed in this nuclear decay.
4 points
4
Question 9
9.
Hydrogen-1 fuses with hydrogen-2 to create a new nucleus. Gamma radiation is released in the process. Write the balanced nuclear reaction below. You can type or draw.
4 points
4
Question 10
10.
Hydrogen-1 fuses with with nitrogen-15. A new nucleus is made and an alpha particle is released. Write the balanced nuclear reaction below.
1 point
1
Question 11
11.
Radon-222 undergoes alpha decay. Write the balanced nuclear reaction. You can type or draw.
2 points
2
Question 12
12.
What is a stellar nebula?
4 points
4
Question 13
13.
Describe how a stellar nebula becomes a main sequence star.
1 point
1
Question 14
14.
What will our sun become in the next stage of its life?
2 points
2
Question 15
15.
Which star(s) has/have supernova explosions? Select all that apply.
2 points
2
Question 16
16.
Which two possible stars form after a supernova?
_______ OR _______
4 points
4
Question 17
17.
Describe what happens when the hydrogen fuel runs out in a main sequence star?
4 points
4
Question 18
18.
Arrange these galaxies in order of distance from earth, from closest (1) to farthest (4).
Galaxy A
Galaxy B
Galaxy C
Galaxy D
1 - Closest
2
3
4 - Farthest
4 points
4
Question 19
19.
Which element(s) is/are in this star? Select all that apply.