Energy
What is temperature a measure of?
The average speed that particles within an object or area move at.
What are all objects you can touch made up of?
Matter, or atoms.
How can you determine if something is or was a living organism?
Check to see if it has cells
Why do the seasons happen?
The tilt of the earth's axis causes the northern and southern hemisphere to tilt towards and away from the sun, changing the angle the sun's light hits the earth.
How old is the Earth, and how do we know?
4.6 Billion years old.
1) Radioactive dating methods
2) Superpositioning
A rollercoaster starts it run by going up a hill. The rollercoaster then races down the side to the finish. At which part was the potential energy the highest?
The potential energy is highest at the top hill.
What are the three particles found in atoms?
Protons (+), Neutrons, and Electrons (-)
What determines an organism's traits?
Their genetic code, DNA, or the sequence of their nucleotides.
What are the layers of the earth?
Crust, Mantle, Core
or:
Lithosphere, Aesthenosphere, Mesosphere, Outer Core, Inner Core
How does fog or clouds form?
Water molecules evaporate and then condense around particles
Why can't a machine run for forever?
The Law of Conservation of Energy states that energy cannot be created or destroyed, and the machine will lose energy due to friction.
How do plants get their energy?
Through photosynthesis, turning sunlight and Carbon Dioxide (CO2) into Oxygen (O2)
What is a stimuli
A stimuli is any change in an organisms surrounding that creates a response in the organism.
What is the theory of plate tectonics?
The idea that the surface of the earth changes over time due to the movement of distinct plates of crust that slide over the mantle of the earth.
What is a convection current?
A current of fluid made between hot and cold areas. Hot air rises, cools and then falls back down to heat up and go back, etc.
How would you prevent heat from escaping a cup!
Insulate it!
When HCL touches Calcite, it bubbles. Is this a chemical or a physical reaction?
A chemical reaction.
What will happen to an ecosystem if all of the grasses and plant life died?
With no food for the herbivores to eat, they would begin to die. With no herbivores to eat, the carnivores would then begin to die.
List the objects in space according to size:
Earth, Moon, Sun, Milky Way Galaxy
From Largest to Smallest:
Milky Way Galaxy, Sun, Earth, Moon
From Smallest to Largest:
Moon, Earth, Sun, Milky Way Galaxy
You are given an electromagnet made up of a wire and a nail. How can you increase the strength of the electromagnet?
Increase the number of coils, by wrapping the wire around the nail more.
Which will produce more force, a car or a train moving at 10mph, and why?
The train, because it is more massive. F = M x A
What happens to a substance as you increase its thermal energy, assuming it starts at room temperature as a solid?
The substance will change state from solid to liquid, then to gas as it heats up.
Why does sexual reproduction result in offspring which is similar but not identical to it parents, where asexual reproduction produces exact duplicates?
Sexual reproduction requires the combination of genes. Asexual reproduction is just a perfect copy of the genes.
DAILY DOUBLE: 500 POINTS PER EXAMPLE
What is some evidence that the surface of earth is changing and was once connected in one continent?
1. Rocks of the Same Origin found separated.
2. Fossils of the same species found separated.
3. The shape of continents sticking together like puzzle pieces.
4. Plates continue to move today.
Why have global temperatures increased over the past 200 years?
1. Fossil Fuel Combustion (CO2)
2. Agriculture (Methane, Forest Clearing)
3. Human Population Increase (More resource demand)
4. Natural Events (Volcanic activity, Hurricanes, Solar Radiation)