Physics
Define gravity.
An invisible force that pulls objects to Earth's center/A force that pulls objects down
What is a fulcrum?
Support/The support in a lever
What are the 3 states of matter?
Solid, liquid, and gas
What do humans breathe in and what do we breathe out?
Oxygen and Carbon Dioxide/We breathe in oxygen and breathe out Carbon Dioxide
What is mass?
How much matter/stuff is in an object
Name 3 simple machines.
Incline Plane/Lever/Pulley/Screw/Wedge/Wheel and Axle
What is a substance called when it repels water and does not easily absorb it?
Hydrophobic
Why are blood tests important?
To know if we are healthy/Blood tests tell you if you're healthy or not
What is velocity? Give an example of an object being affected by velocity.
How fast something goes in 1 direction and a ball falling/car driving/...
What do simple machines do?
Make work easier/Change the amount and direction of force
Which state of matter is the least dense?
Gas
Which organ is known as the command center of your body and why?
The brain, because it tells the rest of our body what to do/The brain, because it controls our body
Why does cold air sink while hot air rises?
Difference in density/Cold air is denser than hot air
What does support do in a building?
Helps a structure stay upright and hold weight
What is the difference between a hydrophobic and hydrophilic substance?
Hydrophobic substance repels and does not absorb water while hydrophilic mixes with and absorbs water
What is the difference between your arteries and veins?
Arteries carry blood around the body while veins bring the blood back to your heart