7th grade science
What is the smallest unit of life?
cells
How many meters in .980km?
980 m
What kind of rock come from a volcano?
Igneous rock
What are the 5 layers of the atmosphere in order?
Troposphere
Stratosphere
Mesosphere
Thermosphere
Exosphere
What was the average lifespan of a t-rex?
Between 27-33 years
~30 years
What is DNA?
Fill in the blank
During a science lab, you should _________ chemicals instead of the directly smelling a chemical.
Wafting
What does dcc stand for in the rock cycle?
Deposit, Compaction, Cementation
Who came up with pangea?
Alfred Wegner
What percentage of people have a third nipple?
6% have a third nipple
What does photosynthesis create?
Glucose
If a car has traveled, 500 meters in 25 seconds. What was it’s velocity?
20 m/s
What poles of a magnet are attracted to each other?
North and south poles
What does a meteorologist study?
Meteorologists study weather patterns.
What are the only two countries that do not sell coca- cola?
Cuba and North Korea
What kind of cell helps your immune system fight off bacteria and viruses?
White blood cells
If your starting velocity was 0 m/s and it took 5 seconds to reach a final velocity of 25 m/s, what was your acceleration?
5 m/s^2
Why are parallel circuits used in houses over simple circuits?
You can turn off specific parts of parallel circuits.
What are the 4 types of volcanoes?
Cinder, Composite, Shield
What was the orginal purpose of chainsaws?
They were invented for childbirth.
What do animals use to breathe underwater?
Gills
What was the force of an object that was 20kg and fell from 3m to the ground?
588 N
What does AC and DC stand for when talking about electricity?
Alternating Current, Direct Current
What kind of fault is the san andreas fault?
Transform
How many lakes are actually in Minnesota?
11,842 Lakes