Which type of reproduction results in offspring genetically identical to the parent?
A. Sexual reproduction
B. Asexual reproduction
C. Binary fission
D. Metamorphosis
B. Asexual Reproduction
What is the name of the scientist known for his theory of evolution by natural selection?
B. Charles Darwin
Which type of plate boundary is characterized by plates moving away from each other?
C. Divergent
As distance increases, what happens to gravitational force between two objects?
C. It decreases the force
What principle states that the oldest rock layers are at the bottom of undisturbed sedimentary rock?
A. Law of Superposition
In sexual reproduction, what of the following is true of the egg and sperm?
A) They both come from one parent.
B) They each contain half the genetic information.
C) They are identical.
D) They give the offspring inherited and acquired traits
B. They each contain half of the genetic information
How do scientists determine the relative age of rock layers?
A. By measuring radioactive decay
B. By using index fossils
C. By analyzing mineral content
D. By testing rock hardness
B. By using index fossils
What is the movement of tectonic plates primarily caused by?
C. Convection currents
What happens when multiple forces acting on an object are balanced?
A. The object accelerates
B. The object changes direction
C. The object maintains its current motion
D. The object stops moving
C. The object maintains its current motion
What type of rock forms from cooled magma?
C. Igneous
What is the term for a genetic trait that is expressed only when two copies are present?
B. Recessive
What percentage of species that have lived on Earth are now extinct?
A. 50%
B. 75%
C. 99%
D. 25%
C. 99%
What do tectonic plates float on?
C. The asthenosphere
How old is the Earth estimated to be?
C. 4.6 billion years
In flowers, red petals is dominant over white petals.
Two red petal parents are crossed and produce a white petal offspring. What does this mean for the parents genotypes? (Use a punnett square if necessary).
A. Both parents are homozygous dominant
B. One parent must be homozygous dominant while the other is homozygous recessive
C. One parent must be homozygous dominant while the other is heterozygous
D. Both parents are heterozygous
D. Both parents are heterozygous
What term describes the process by which species adapt to their environment and may lead to extinction?
A. Natural Selection
What evidence do scientists use to study Earth's interior without directly observing it?
A. Magnetic fields only
B. Seismic data
C. Surface temperature
D. Atmospheric pressure measurements
B. Seismic data
What geological feature is NOT formed at a convergent boundary?
A. Mid-ocean ridge