Nature of Science
What units do scientists use for measuring data in their experiments?
S.I., metric (grams, liters, meters)
What is created by a plant during photosynthesis?
Oxygen and glucose (energy)
What is an example of a non-renewable resource?
fossil fuels, natural gas, coal, electricity
Why do sunspots appear darker than the surrounding area on the sun?
They are areas of gas that are cooler than the surrounding areas.
In which state of matter do particles spread and fill the volume of whatever size and shape container holds them?
Gas
What is the definition of replication?
Duplicating (exactly copying) the process of experimentation to ensure large amounts of data exists; helps promote accuracy.
Name an organism that can reproduce asexually.
bacteria, amoeba, hydras, or any other organism that reproduces by creating an exact copy of itself through mitosis.
If you dig a large hole and notice 3 distinctly different layers, which layer could you infer is the youngest, or newest layer?
The top layer, or the layer closest to the surface
Which model of the solar system places Earth at its center?
Geocentric (Geo means earth, centric means center)
What 2 qualities do you need to know in order to calculate the density of any matter?
Volume and Mass
Why are data tables and graphs so important in scientific reporting?
They compare data in a clear and concise way to help provide meaning and draw conclusions
Name 2 limiting factors that would slow the growth of a population of deer.
Lack of food, water, shelter, or mates; overpopulation, predation
Two tectonics plates collide and begin to push up the earth's crust where they meet. What could form at this point?
Mountains or Volcanos
What phase in the life cycle of a star takes place after the most massive of stars is already a supernova?
Black hole
What is an electron cloud?
The space around the positively charged nucleus of an atom, where the negatively charged electrons orbit.
How might choosing a small sample size, rather than a larger sample size affect the results of a scientific investigation?
It could skew the results; it is less reliable; results may be inaccurate.
Oxygen reacts with glucose to produce carbon dioxide and water, and release energy.
This summarizes what cellular process?
Cellular Respiration
Approximately how old is the Earth?
4.5 billion years
What fuel does a main-sequence star use for nuclear fusion?
Hydrogen
Looking at an unknown substance, you see different colors and different sizes of particles unevenly distributed throughout the substance. What term is used to best classify this type of matter?
Heterogeneous mixture
Suppose that new evidence from several experiments disagrees with an accepted theory. What will happen to this theory?
It could be modified, revised or replaced with a new theory that agrees with the new data.
Two flowering plants are heterozygous dominant for smooth seeds (S) and carry a recessive gene for wrinkled seeds (s). After reproducing, what percent of their offspring will have wrinkled seeds? (Hint: Complete a Punnet Square using the parents traits.)
25% or 1 in 4
How are metamorphic rocks formed?
Through the application of intense heat and pressure to fragments of other rocks.
What causes the change in seasons on Earth?
The constant tilt of the Earth as it travels around the sun causes the sun to strike the surface of the Earth at different angles during different times of the year.
An atom of Silicon contains 14 protons and 14 neutrons. What is the maximum number of electrons it could have and still have a positive charge?
13