Forces & Motion
When all forces acting on an object cancel out, what happens to its motion?
What is it stays still or keeps moving at constant speed?
Why does a passenger move forward when a car suddenly stops?
What is inertia (Newton’s First Law)?
What moves through a wave: matter or energy?
What is energy?
What causes the Moon to stay in orbit around Earth?
What is gravity?
Animals often compete with each other for access to this in order to reproduce.
What are mates?
A box is pushed with 60 N right and 60 N left. What will the box do?
What is it will not change motion (balanced forces)?
If you push an empty cart and a full cart with the same force, which accelerates more?
What is the empty cart?
A floating object bobs up and down as a wave passes. What does this show?
What is energy moves, not the object itself?
If the Northern Hemisphere is tilted toward the Sun, what type of sunlight does it receive?
What is more direct sunlight?
What is one behavior animals may use to attract a mate?
What is courtship behavior?
Ex: Dancing, Calling, Showing Features
A soccer ball slows down after being kicked across grass. What force is mainly responsible?
What is friction?
A force of 50 N is applied to an object with a mass of 10 kg. What is its acceleration?
What is 5 m/s²?
If wavelength increases but speed stays the same, what happens to frequency?
What is frequency decreases?
Why don’t we see an eclipse every month?
What is the Moon’s orbit is tilted?
Why might two animals of the same species act aggressively toward each other?
What is to compete for a mate?
Two objects fall from the same height. One falls slower because it has more surface area. Why?
What is greater air resistance (fluid friction)?
Why does pushing harder on an object cause it to speed up faster?
What is more force causes greater acceleration (F = ma)?
Why are digital signals better for sending messages over long distances?
What is they are less affected by interference/noise?
A planet twice as massive as another would have what effect on gravity?
What is stronger gravitational pull?
How can courtship behaviors help increase an organism’s chances of reproducing?
What is they attract mates or show fitness?
If two objects have the same mass but one experiences more net force, how will their motions compare?
What is the one with more force accelerates more?
When you jump off a small boat, why does the boat move backward?
What is Newton’s Third Law (action-reaction forces)?
Why can sunlight travel through empty space but sound cannot?
What is light is an electromagnetic wave, sound needs matter?
Why do planets farther from the Sun move more slowly in their orbits?
What is weaker gravitational pull at greater distances?
If an animal is unable to compete successfully for mates, what is the most likely long-term effect?
What is it will not reproduce, so its traits are less likely to be passed on?