Biology
Where does chemical digestion begin in the digestive process
Chemical digestion begins when saliva is released in the mouth.
What is the name of the following compound?
Mg3(PO4)2
Magnesium phosphate
When a lightray that is traveling parallel to the principal axis hits a concave mirror, where will it reflect?
Through the focal point
What term is used to describe the short term atmospheric conditions of a specific area?
Weather
#1
Your team gets 200 points
What is the primary purpose of red blood cells
Carry oxygen to the body.
(also takes carbon dioxide to the lungs to be exhaled)
What is the chemical name of a compound that is formed with 2 sulfurs and 2 florines?
disulfur difluoride
How does the speed of light change when it enters a medium with a high index of refraction?
It slows down
How can you determine the age of a tree?
Count the number of rings
#2
Your team loses 200 points.
Sorry about that one...
This organelle contains most of a cell’s DNA
Nucleus
What do elements in the same family of the periodic table have in common?
Similar reactivity, same number of valence electrons
What is the first part of the eye that light passes through?
The Cornea
How can ice cores give us insights about how the temperature of earth has changed over thousands of years?
Analyze the CO2 trapped in the layers of ice
#3
Take 300 points from the team currently in first place.
If you are in first place, give 200 points to another team.
Aside from capillaries, what are the two types of vessels in animals and what do they do?
Arteries carry blood away from the heart.
Veins carry blood to the heart.
What are the products of a combustion of a hydrocarbon?
Carbon dioxide and water
When light passes through the focal point before hitting a converging lens, where will the light ray refract?
Parallel to the principal axis
Which greenhouse gas has the greatest impact on the atmosphere?
Water vapor
#4
Choose another question on the board.
Other teams are not allowed to buzz in.
Name the two types of vessels in plants and explain what they do.
Xylem- moves water and dissolved minerals from the roots to the leaves
Phloem - Moves water, sugar, hormones throughout the plant
What would you expect the products to be if you mixed an acid and a base? What is this reaction called?
Neutralization,
An aqueous salt and Water
How does the angle of a light ray change as it passes from a dense substance (higher n value) into a less dense substance (lower n value)?
The angle of refraction is greater than the angle of incidence.
(Further away from the normal)
This term is used to describe a planet's ability to reflect light and heat?
Albedo
#5
Take 1 point for your team
or
Gift another team 500 points