Body Systems
What organ is our filtration system?
The liver. It filters harmful substances out of our body.
Name all three laws.
1. Inertia
2. Force/Acceleration
3. Action Reaction
Name the terrestrial planets in order, starting from the nearest to the sun.
Mercury, Venus, Earth and Mars.
Describe the difference between a Solute and a Solvent.
Solute - The item put into the dissolver
Solvent - The thing that dissolves the item
What makes the tides? How?
When the moon (and the sun) go around the Earth, the water is pulled closer to the moon because of its gravity. This causes the high tides. On the other side, the water is at low tide.
What does the Occipital lobe do? Where is it?
The Occipital lobe processes visual information, and it is in the back part of the brain.
If you throw a baseball in space, what two things will happen?
The baseball will move forever (Newton's 1st law) and you will go slightly backwards (Newton's 3 law).
How many moons does Mars have?
Two, Phobos and Deimos.
When flour and water are mixed, is that mixture a:
a. Solution
b. Suspension
c. Colloid
Why?
It is a suspension because it does not dissolve. Instead, it absorbs the water and forms a sticky suspension.
What is a solubility curve?
A graph that shows how much a solute can dissolve in a solvent at different temperatures.
Name 3 main hormones in the human body and identify their functions.
What does Newton's first law state?
An object at rest will stay at rest, and an object in motion will stay in motion unless acted on by an unbalanced force.
Which planet is on its side?
Uranus.
Describe the difference between a Homogeneous mixture and a Heterogeneous mixture.
Homogeneous - It is the same throughout
Heterogeneous - It is different throughout
What does the frontal lobe in the brain do?
It manages thoughts and emotions.
Where is the Pineal gland, how big is it, and what does it do?
The pineal gland is in the middle of the brain, it is the size of a pea, and it makes Melatonin.
Issac Newton discovered the three laws of motion. Name 2 other things Issac was good at.
He was a mathematician, physicist, astronomer, alchemist, theologian, and author.
What is the Oort cloud? Where is it?
It is a giant spherical shell around the sun, made of mostly comets and other icy objects.
Describe how to desaturate, supersaturate, and saturate a solution.
Saturate - Add more solute until it settles at the bottom
Supersaturate - Heat the solvent and add more solute. Carefully heat it down to create a supersaturated solution.
They landed on the ground at nearly the same time. That happened because there was no air resistance to alter the effects.
It is in the top area of the brain, it processes sensory information including temperature, touch, pressure and pain.
Name the formula for Newton's 2nd law.
F=M*A
The Lunar eclipse is positioned, Sun, Moon, Earth. (the Earth is blocking the sunlight from the moon.)
The Solar eclipse is positioned, Sun, Earth. Moon. (the moon is blocking the sunlight from the earth.)
Is steel an element, compound, or mixture?
It is a mixture because its ingredients are not chemically combined, and they are not put in a set ratio.
What is a neap and spring tide? When do they occur?
Spring tides have the highest and lowest tides, due to the alignment when the Sun, Moon, and Earth are aligned (full moon and new moon) and they pull together.
Neap tides happen when the Sun, Moon and Earth are shaped like an "L" or when positioned at 90 degrees (first quarter and third quarter). They are when the Sun and the Moon cancel each other's gravity, causing very little difference between high tide and low tide.