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Laws of Motion
Formulas
Earth Systems
Global Warming
I'm Feeling Lucky
100
What is Newton's first law of motion?
An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
100
What is the formula used to describe Newton's Second Law of Motion?
F=ma
100
What is the lithosphere?
the outermost layer of the Earth; includes crust and upper mantle
100
What is Global Warming?
The observed rise in the average surface temperature of the Earth
100
How do you convert km/h to m/s?
divide by 3.6
200
What is Newton's Second Law of Motion?
The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).
200
What is the formula for momentum?
M=mv
200
What is the hydrosphere?
The water on the Earth's surface
200
What is the Greenhouse Effect?
Earth's atmosphere trapping heat, which keeps the Earth's temperature stable
200
What is biota?
All living things
300
What is Newton's Third Law of Motion?
For every action there is an equal and opposite re-action.
300
What is the formula for Kinetic Energy?
KE=1/2(mv^2)
300
What is the atmosphere?
the layer of gases surrounding the Earth
300
Name one example in which humans have impacted on the carbon cycle?
Answers will vary - but may include humans burning excessive amounts of fossil fuels which produces too much carbon dioxide in the atmosphere
300
What is work?
Transfer in energy that occurs when a force moves an object in the direction of the force
400
Which law explains why an adult on a swing requires more force to be moved compared to a child on a swing?
Newton's Second Law of Motion
400
What is the formula for Potential Energy?
PE=mgh
400
What is the Biosphere?
The life support system of Earth; contains all living things
400
Why is an increase in CFC's in the atmosphere a concern?
CFCs react to form chlorine atoms, which destroy the ozone, increasing the amount of UV rays reaching Earth and harming living organisms.
400
A person is measured on the moon and on Earth. How will the two figures compare: a) the mass on Earth will be double than the mass on the moon b) the mass on Earth will be the same as the mass on the moon c) you wouldn't have a mass on the moon
B
500
Which Law of Motion explains how rockets work and why?
Third Law of Motion - When a rocket shoots fuel out one end, this propels the rocket forward
500
What is the formula for acceleration?
a=(change in velocity)/time
500
Explain how carbon can be found in the 4 systems?
Lithosphere - coal; oil Hydrosphere - it is held in living organisms and in the sediments of the ocean beds Atmosphere - carbon dioxide gases Biosphere - It is present in organisms as compounds, like fats, carbohydrates and proteins.
500
How does photosynthesis, cellular respiration and burning fossil fuels link into carbon cycle?
Photosynthesis takes up carbon in the form of carbon dioxide. Cellular respiration gives off carbon dioxide as a waste product, as does the burning of fossil fuels. All of which contribute carbon to the carbon cycle.
500
Sophia, whose mass is 50 kg, experienced a net force of 1800 N at the bottom of a roller coaster loop during her school's physics field trip to the local amusement park. Determine Sophia's acceleration at this location.
a= 36 m/s/s