Science 9 – Final Exam Review Questions
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What is the difference between a theory and a hypothesis?
What is the difference between an independent variable and a dependent variable?
What are the main functions of cell division?
Why do cells only grow to a certain size?
What are the main structures found in the nucleus?
Compare the organelles found in plant and animal cells.
Describe the structure of DNA.
How does DNA replicate itself?
How are proteins produced?
What is the human genome?
Describe and draw the stages of mitosis.
What is a mutation?
Describe the different methods of asexual reproduction.
What are some advantages of asexual reproduction?
Compare and contrast somatic and sex cells.
What are haploid and diploid cells?
How many homologous chromosomes are in a human somatic cell?
How are mitosis and meiosis similar and different?
What is the difference between an allele and a gene?
Why do asexually producing offspring often produce many offspring?
What is conjugation?
What is a hermaphrodite and what are some advantages of being a hermaphrodite?
Name the reproductive organs of flowering plants.
Describe some advantages and disadvantages of both internal and external fertilization.
Describe the different reproductive technologies in agriculture.
Name some secondary sexual characteristics that develop in male humans.
How are sperm produced?
What is the path of a sperm cell?
Describe the functions of the structures in the male reproductive system.
Name some secondary sexual characteristics that develop in female humans.
How does the human egg develop?
Describe the function of the structures in the female reproductive system.
Describe the stages of menstruation.
What are stem cells and what makes them important to scientists?
Why is there a 50% chance of a human child being male and 50% of it being female?
Name some physical and chemical properties of matter. How do you know if matter has been changed
physically or chemically? (Be able to identify whether a change is physical or chemical)
What is the Kinetic Molecular Theory (KMT)?
Explain how matter changes state using the KMT.
What are the differences between metals, non-metals, and metalloids?
How did Mendeleev organize the Periodic Table of Elements?
How are we able to predict the properties of elements on the Periodic Table?
What did Thomson revise in the Atomic Theory?
How did Rutherford revise the Atomic Theory?
What are the differences between electrons, protons, and neutrons?
What was Bohr’s contribution to the Atomic Theory?
How can we find the number of electrons, protons, or neutrons in an atom using the Periodic Table?
Draw Bohr Diagrams for a nitrogen atom and a sulfur ion.
What is the difference between ionic compounds and covalent compounds?
For aluminum and oxygen to form a compound, how many atoms of each are needed?
How many atoms of each element are in the formula Al2(SO4)3?
What is a polyatomic ion?
Why do the names of some metal ions have a Roman numeral after them?
Write the formulas for magnesium and chlorine and for copper (II) nitrate
Write the name of the compound formed by sodium and iodine.
Write the name of the ionic compound Fe2(CO3)3.
Describe a distinguishing property of each chemical family.
What is the law of electric charges?
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What is induced charge separation?
Does amber tend to gain or lose electrons when rubbed with vinyl? Why?
Describe the three ways in which an object can become electrically charged.
What is the difference between an insulator and a conductor?
What is Coulomb’s Law?
How do fabric softener sheets help to reduce static cling?
What is a metal-leaf electroscope used for? How do you use it?
What is the major difference between static and current electricity?
Draw a circuit diagram with two electric cells, a switch and a light bulb. Indicate the direction of electron flow.
Define conventional current.
Draw a circuit diagram for Q71 but add a lamp in series. Do it again but add a lamp in parallel.
How is an ammeter connected in a circuit to measure current?
What is the voltage of three 1.5V cells connected in series to form a battery? In parallel?
A toaster uses a current of 4A. If the resistance of the toaster is 27 Ω, what is the voltage in the toaster?
What is potential energy and kinetic energy?
What is the difference between rotation and revolution of the Earth?
What are the differences between the equinoxes and the solstices?
What causes the different seasons?
What are solar and lunar eclipses?
What are the differences between spring tides and neap tides?
What is the Rotating Nebula Theory? What is the Big Splash Theory?
Which are the terrestrial planets and which are the gas giants?
What is an astronomical unit?
What are Kepler’s Laws of Planetary Motion?
What is red shift?
What is parallax?
How does a star form?
What is the difference between solar flares and solar prominences?
What is a neutron star, a pulsar and a black hole?
What is an astrolabe?
What are some main differences between the many telescopes used today?
What is a space probe?
What advancements must scientists make before we can travel through space like in Star Trek?
What are some health problems faced by astronauts in space?