Layers of the Atmosphere
In which layer of the atmosphere do meteors occur?
Mesosphere
Devon rides a plane to go to Disney World. He notices that the air from the propeller blows backwards but the plane moves forward. Which of Newton's laws is illustrated by this?
Newton's Third Law: For every action, there is an equal and opposite reaction.
In an experiment testing how sunlight affects plant growth, what would be the INDEPENDENT variable?
Amount of sunlight
Jose explains to Trey that friction causes two touching objects to slow down. Trey says friction is a force that pulls two objects closer together. Who is correct?
Jose is correct.
Jason picks up pecans that have fallen from a pecan tree. He gets frustrated when more pecans fall to the ground. What force is causing pecans to fall to the ground?
Gravity
In what layer of the atmosphere does weather, like rain and snow, take place?
Troposphere
Maria begins pushing a grocery cart for her mom when it is half full. She notices that it is harder to push the cart when it is completely full. Which of Newton's Laws is illustrated here?
Newton's Second Law: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
A teacher tests whether the temperature of a ball affects how high it bounces. What is the DEPENDENT variable?
Height of the bounce
Juan is having a hard time moving a heavy box into his room. His brother comes to help, and together they can move the box more easily. Which of Newton's Laws is illustrated here?
Newton's Second Law: The more force you apply to something, the more it accelerates.
Calculate the speed of an object that travels 60 miles in 3 hours.
20 miles per hour
What is the outermost layer of the atmosphere, closest to outer space?
Exosphere
Kevin is playing soccer. He kicks the ball to the edge of the woods then goes inside for dinner. When he returns after dinner, the ball is still at the edge of the woods. Which of Newton's Laws is illustrated here?
Newton's First Law: An object at rest will remain at rest... unless acted upon by an external force.
A group of students studies if listening to music helps people memorize words faster. What is the INDEPENDENT variable?
Listening to music or not
What unit do scientists use to measure force?
Newtons
A bicycle moves at a speed of 12 kilometers per hour. How far will it travel in three hours?
36 kilometers
Which layer of the atmosphere (within the stratosphere) protects humans from UV rays?
Ozone layer
As a rocket launches into space, the engines push down against the earth. Which of Newton's Laws is at work in this scenario?
Newton's Third Law: For every action, there is an equal and opposite reaction.
A scientist wants to test if different types of fertilizer make tomato plants produce more tomatoes. Which variable would "amount of water" be in this experiment?
Controlled / constant variable
A book is setting on a table. The book is not moving. What force is pulling the book down to the table?
Gravity
A car travels 180 miles at a constant speed of 60 miles per hour. How long does the trip take?
3 hours
Which atmospheric layer contains the auroras (Northern Lights?)
Thermosphere
Amanda says when she goes bowling, she picks a lighter bowling ball, so she can get it to go farther than a heavy bowling ball with the same amount of force. Which of Newton's Laws is illustrated here?
Newton's Second Law: Heavier objects need more force to accelerate the same amount. (Less mass requires less force to accelerate.)
A student investigates whether the color of a car affects how hot it gets when parked in the sun. What is the INDEPENDENT variable in this experiment?
Color of the car
A dog pulls on a rope with 60 N to the left, and a person pulls with 90 N to the right. What is the net force AND direction the rope will move?
30 N, to the right
Leon is calculating how fast he can run. He divides 10 seconds by 5 yards and says he ran 2 seconds per yard. Is he correct? Why or why not?
He is NOT correct.
Speed = distance / time