BIOLOGY
CHEMISTRY
PHYSICS
EARTH AND SPACE
100
The fertilized egg is termed a/an _____.
Zygote
100
a) Define a covalent bond.
b) Which of the following is NOT formed by a covalent bond?
K2S
H2O
I2
CO2
a) It is a shared pair of electrons between two atoms/joining two atoms together.
b) K2S
100
What phenomenon is represented in the diagram?
Destructive interference
100
The average temperature of the surface of Earth has increased approximately 1°C in the past century. Which reason best explains this increase in temperature?
higher levels of carbon dioxide and other greenhouse gases in the atmosphere
200
Which of the following are reproductive cells?
A Egg
B Testis
C Ovary
D Sperm
A and D
200
It is made of layers of atoms with weak forces between them
200
If a toaster produces 12 ohms of resistance in a 120-volt circuit, what is the amount of current in the
circuit?
10A
200
In what process is Carbon transformed into chemical energy?
Photosynthesis
300
A. discrete variation
B.disruptive variation
C.continuous variation
D.discontinuous variation
C. continuous variation
300
Why does a higher temperature increase the rate of a reaction?
It increases the kinetic energy of the reactant particles which increases the frequency of successful collisions.
300
4g/cm3
300
The Himalayan mountains formed at which type of boundary?
Convergent boundary
400
a)What do plants need for the photosynthesis process?
b) Write a word equation for photosynthesis.
a) light, carbon dioxide, and water
b) Carbon dioxide + water -> glucose + oxygen
400
a) How would you complete the following word equation?
zinc carbonate + nitric acid →
b) What can be used to identify carbon dioxide?
a)
zinc nitrate + water + carbon dioxide
b) It turns limewater milky
400
All the lamps in this circuit have the same resistance. What are the readings of ammeters A1 and A2?
A1 = 4A and A2 = 2A
400
According to most scientists, what is the biggest cause of most mass extinctions?
A. overhunting
B. evolution of new species to replace old ones
C. major change in environment/habitat
D. asteroid impact
C. major change in environment/habitat
500
B. Ureter
C.Bladder
D. Urethra
500
Select all of the statements below that are correct to describe the structure and properties of ionic compounds...
A.They have high melting and boiling points
B.They have a lattice structure
C. The ions are held together by intermolecular forces
D. They can conduct electricity when molten
E. They can conduct electricity when solid
They have high melting and boiling points
They have a lattice structure
They can conduct electricity when molten
500
Identify and explain the mode of heat transfer shown
Convection.
Warm air rises and the cool air sinks
500
a) What are nebulae?
b) Stars, like our Sun, form from nebulae. How long ago did our Sun form?
a) clouds of gas and dust in space
b) 4.6 billion years ago