NEW
Font size
WorksheetsSTEAM Week 2019 Quiz Bee - Grade 8
Total questions: 50
Worksheet time: 2hrs 34mins
To which real number subset do the following real numbers belong?
Irrational Numbers
Natural Numbers
Rational Numbers
Integers
We know that π (Pi) is approximately equal to 3.141592654... To which subset of real numbers does π belong?
Irrational Numbers
Rational Numbers
Integers
Natural Numbers
Simplify the expression using exponents.
818
915
98
8115
Using exponents, what is the simplified form of this expression?
59
15
514
55
What is the value of 180?
18
0
1
-18
What is the best estimate for the following.
9.3432...
6.782...
8.2326...
10.7638...
What is the slope of the line that passes through the points (5, 1) and (2, -7)?
The lines 7x + 4y = 35 and 7x + 4y = 35 intersect at ____________________
2 points
1 point
An infinite number of points
There are no intersection points.
(12x4y6 + 24x2y2 - 16 xy) / 4xy
(6x + 4x4 - 3x2) + (7x4 + 5x2 + 8x)
(6b3 + 6 - b4) - (8b3 - 6b4 + 2)
(n - 5)(n - 1)
(x2-2x+1)(x+1)
k2 -2k - 24
3x3-x2+6x-2
Are waves that carry energy
SOUND
INFRARED
Is the ability of a material to return to its original shape
VISIBLE LIGHT
ELASTICITY
Visible lights makes up a part of the electromagnetic spectrum.
TRUE
FALSE
A light-year is the distance that light travels in a year.
TRUE
FALSE
Fe + S --> FeS
In a chemical formula, the number of each type of atom in the compound is shown by numbers called _______.
superscripts
oxidation numbers
chemical symbols
subscripts
A chemical bond that occurs when atoms share electrons is a(n) ____ bond.
covalent
polyatomic
ionic
magnetic
The ____ tells you how many electrons an atom must gain, lose, or share to become stable.
atomic mass
ionic number
atomic number
oxidation number
How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable?
8
6
4
2
What is the name of the compound with the formula NaCl?
sodium chloride
sodium dichloride
chlorine sodiate
sodium chlorate
What is the name of a binary compound made up of lithium and chlorine?
lithium chloride
lithium chlorate
chlorine lithium
chlorine lithiate
A student learns that the sun is classified as a medium-size star and that many stars are much bigger and brighter. However, the student observes that other stars look very dim, even through a telescope.
Why do other stars look much dimmer than the sun?
A. The sun appears yellow, which is more visible than other colors.
B. The sun is much closer to Earth than other stars are.
C. Other stars are made up of different gases than the sun is.
D. As light from other stars travels through space, it gets reflected.
A bicycle rider is traveling up a hill. When the rider reaches the top of the hill, she stops to rest. Then she travels down the hill. The diagram shows the rider in the three different positions.
Which of these correctly describes the potential energy and the kinetic energy of the bicycle rider?
A. When the rider is at the top of the hill, her potential energy is the greatest, and her kinetic energy is the least.
B. As the rider moves up the hill, her kinetic energy increases, and her potential energy decreases.
C. When the rider goes down the hill, her potential energy increases, and her kinetic energy decreases.
D. As the rider reaches the bottom of the hill, her kinetic energy and her potential energy decrease.
The diagram below shows four consecutive moon phases.
Which of the following diagrams shows the next four moon phases in the correct order?
A scientist added bacteria and a nutrient medium that could support the growth of the bacteria to a sterilized petri dish. No other materials were added. The graph models growth of the bacteria over time.
Which of these most likely explains why the bacterial population stopped growing?
A. The bacteria competed for nutrients and died after all the nutrients were consumed.
B. The bacteria did not reproduce in the system, and eventually each individual died at the end of its life cycle.
C. The bacteria mutated from photosynthetic to carnivorous organisms and consumed one another until all the individuals were dead.
D. The bacteria became diseased and were unable to survive in the closed system.
Which statement correctly describes the location and charge of the electrons in an atom?
F.The electrons are inside the nucleus and have no charge.
G.The electrons are outside the nucleus and have no charge.
H.The electrons are inside the nucleus and have a negative charge.
J.The electrons are outside the nucleus and have a negative charge.
1. Mg(NO)2
2. NH4NO2
3. Ca(ClO2)2
4. Co(NO3)2
Substance 1 produced light when burned.
Substance 2 dissolved in water.
Substance 3 melted at 100⁰ C.
Substance 4 formed a precipitate.
Which substances produced a chemical change?
Name the elements of art.
Repetition and Variation, Balance, Contrast, Space
Line, Shape, Harmony, Balance, Texture, Form
Line, Shape, Form, Space, Color, Texture, Value
Unity, Color, Value, Form, Texture, Shape
The instructions that tell the computer what to do:
Hardware
Input
Software
Ooutput
The physical objects that make up the computer system:
Software
Storage
Input
Hardware
What are the 2 main types of software?
System and Application
Informational and Entertainment
Dynamic and Static
Professional and Home-based
Creating a set of instructions that the computer can use is called...
Application Creation
Program Initialization
Coding
Instructional Command Prompting (ICP)
Google Sheets is an example of _________________ Software.
Spreadsheet
Word Processing
Presentation
Reference
