What is force
A push or a pull
Two bar magnets are placed on a table. The north pole of one magnet is facing the north pole of another magnet.
What will most likely happen?
repel each other.
What is the Law of Superposition
In normal rock layers, older rocks are found below younger rocks.
A solar eclipse happens when ....
the Moon moves between Earth and the Sun
This axis is tilted at an angle of ....
23.5
Give me one physical trait that fish and humans have in common as early embryos.
tail, gills, webbed feet,
What happens to magnetic force as distance increases?
gets weaker when the magnets are moved farther apart.
The height of a wave from the resting position to the crest.
amplitude
A population of insects lives in an area with dark-colored tree bark. Dark-colored insects are harder for birds to see.
Over time, what will most likely happen?
More dark-colored insects will survive and reproduce.
What is the chart called that scientists use to predict the genetic traits that an organism's offspring will inherit?
Punnett Square
How old is the Earth?
4.5-4.6 Billion years old
The two types of waves (not light/sound!)
Transverse and longitudinal
A student slides a book across a desk. The book slows down and stops. Why does it stop?
Friction
A student wants to test how the amount of sunlight affects plant growth.
What is the independent variable?
the amount of sunlight
The higher the frequency of a sound wave, the higher this will be
pitch
Objects with more mass have more _______
gravitational pull or force
A ball is held at the top of a hill. When the ball is released, it rolls down the hill and speeds up.
Which energy change is taking place?
Potential energy changes into kinetic energy.
Sound travels fastest through this state of matter because particles are packed closely together.
solid
The process by which organisms with helpful traits are more likely to survive and reproduce.
natural selection
Plants being bred by humans to produce larger fruits or sweeter vegetables.
artificial selection
A student shines a flashlight at a mirror. The light bounces off the mirror and travels in a new direction.
This is an example of .....
reflection
Give me three of the moon phases.
New Moon, Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, and Waning Crescent.
The tilt of Earth’s axis and Earth’s revolution around the Sun cause these.
seasons
Name the planets in order from closest to the sun to the farthest.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Shared patterns in embryo development suggest that organisms inherited traits from this.
common ancestor