Balanced Forces
A car not moving is an example of a
Balanced force
Pushing a cart is an example of a
Contact force
Which layer of the atmosphere do we live in?
Troposphere
Conduction
All living things
Biosphere
What is an example of an unbalanced force?
A car moving, a soccer ball moving, a rock rolling down a hill
Gravity is an example of a
Noncontact force
Which layer is the farthest away from us but closest to space?
Exosphere
Land and sea breezes happen because air above land and water heat unevenly. What type of heat transfer is this?
Convection
All of the rocks and dirt on Earth
Geosphere
What is the net force on an object if it is not moving
Zero
What type of force is occurring when 2 magnets repel each other?
Noncontact
Which layer burns up the meteors?
Mesosphere
You stay at the beach too long and get a sunburn. What type of heat transfer caused this?
Radiation
A polar bear is sitting on a block of ice in the ocean. What spheres are interacting?
Biosphere, cryosphere, atmosphere and hydrosphere
A car stopped at a light is an example of a unbalanced force
False
What type of force is occurring in a tug of war?
Tension (contact)
What percent of the atmosphere is made up of nitrogen?
78%
True or False
A spoon that heats up because it is in hot coffee is conduction
True
Technically, the cryosphere is also part of which sphere?
Hydrosphere
Pushing a table is an example of a(n)
Unbalanced force
True or False
Air resistance is a noncontact force
False
The Northern Lights are a phenomenon that occurs in which layer of the atmosphere?
Thermosphere
In the atmosphere, hot air is constantly rising and cooler air is constantly sinking. This is an example of....
Convection
Florida orange trees grow in the sun. Which spheres are interacting (or would they need) in order to grow?
Atmosphere, biosphere, and geosphere and hydrosphere