8th Science: Spring Final Exam Review
Chemical reaction in which energy is absorbed (gets colder).
Chemical reaction in which heat energy is released (gets hotter).
Negatively charged particle that exists in a cloud around an atom's nucleus.
Positively charged particle in the nucleus of an atom.
Consists of protons & neutrons. Has a MUCH GREATER mass than the electrons.
A push or pull; has a size and direction.
Horizontal row of elements in the periodic table whose properties change gradually and predictably.
Vertical column of elements in the periodic table that have similar physical or chemical properties.
Substance that exists before a chemical reaction begins (on the left in an equation).
Substance that forms as a result of a chemical reaction (the arrow points toward it).
Observable product of genetic makeup and the environment's influence (what you see).
Genes that an organism has - its genetic makeup (the actual letters).
Neither created nor destroyed.
The law of conservation of mass states that matter is _______.
Transfer of energy from two materials touching.
Transfer of heat by the flow of material.
Energy transferred by waves or rays.
Light waves travel ___________ than sound waves.
What scientific tool is important when you are observing cells?
Weathering & Erosion
What two processes break down rocks, eventually forming sedimentary rocks?
Some scientists believe in the Big Bang Theory because they can see the red shift, which shows galaxies are moving ______ from each other.
When two or more forces are acting on an object in the SAME direction, you ______ them.
When two forces are acting on an object in OPPOSITE directions, you ______ them. The larger force will "win", and the object will accelerate in the direction of that force.
If one force is acting on an object in a horizontal direction and another force is acting on the object in a vertical direction, the object will end up being pushed _________.
All atoms have protons, electrons, and a nucleus, but NOT all atoms are ___________.
High melting point
A physical property that allows metals to be heated up a lot without melting.
Planting trees __________ the amount of carbon dioxide in the atmosphere.
The distance that light travels in one year.
Burning, changing temperature, and giving off bubbles are all indicators of a _________ change.
In the rock cycle, igneous rock slowly weathers and erodes, breaking down into ___________.
The force that causes continental plates to move.
In plate tectonics, when one plate collides with another and plunges downward.
Causes new oceanic crust to be formed. Occurs at rifts in the oceans.
In the water cycle, this happens when water molecules in the air come together to form clouds.
In the water cycle, this happens when it rains, snows, sleets, or hails.
In the water cycle, this happens when liquid water molecules turn into gas and enter the atmosphere.
When the Earth's axis is tilted away from the Sun, it is ___________ in the northern hemisphere.
When the Earth's axis is tilted toward the Sun, it is ___________ in the northern hemisphere.
Weather is day-to-day, but climate is a long-term ________.
The height of a wavelength from the mid-point up to the crest (or down to the trough).
The distance from one crest to the next (or one trough to the next) on a wave.
The top of a wave.
The bottom of a wave.