Matter and Energy
Force and Motion
Earth and Space
Organisms and Environments
Cells/Body Systems
100
A molecule of caffeine is C8H10N4O2
Name the elements in the chemical formula AND how many of each element.
Name the elements in the chemical formula AND how many of each element.
Carbon 8
Hydrogen 10
Nitrogen 4
Oxygen 2
100
<----- (A box) ---->
8N 8N
Two students are pulling on a box. Student A is pulling with a force of 8N. Student B is pulling with a force of 8N.
Are the forces balanced or unbalanced?
Balanced
100
Which penomena occur as a redult of the gravitational attraction betweem the earth and the moon?
Ocean tides
100
Organisms that are made of only one cell are called...
Unicellular
100
What organelle stores food, water and waste?
Vacuole
200
Which TWO of the following substances are elements?
Carbonic Acid H2CO3
Oxygen o2
Hydrochloric acid HCL
Carbon Dioxide CO2
Water H2O
Helium He
Oxygen and Helium
200
A student bounces a ball on the ground and the ball bounces back up with an equal amount of force.
Which law does this illustrate?
Newton's 3rd Law
200
Why does the moon have a greater affect on the earth's tides than the sun?
The moon is closer than the sun
200
Give two examples of organisms that can be found on the second level of the energy pyramid.
Cows, mice, grasshoppers, deer, anything that eats plants
200
Where can DNA be found in a cell?
The Nucleus
300
Which TWO of the following would be properties of a metal?
Poor conductors of heat and electricity
Non-metallic
Brittle
Very malleable
None are magnetic
Good conductors of heat and electricity
Very malleable
Good conductors of heat and electricity
300
If I increase the mass of the object, what happens to the acceleration?
The acceleration decreases
300
What two factors are responsible for the seasons on earth?
The earth's tilt and orbit around the sun
300
Give 3 examples of organisms that could be found at the bottom of an energy pyramid.
Grass, seeds, trees, algae, phytoplanton
(any producers would be a correct answer)
300
A type of cell that does not have a nucleus
Prokaryotic
400
Josie investigated chemical and physical changes using eggs. She did the following four actions to four different eggs:
-Boiled
-Cracked
-Fried
-Scrambled
Which action was a physical change?
Cracking the egg
400
Amanda is a marine biologist studing sharks. The shark she is tracking traveled 225 miles in 3 days.
What is the average speed of the shark?
75 miles/day
400
On a cold, cloudy day, the local weather forecaster predicts that a high pressure system will be moving into the area in the next 24 hours.
What type of weather should they expect when the high pressure system arrives?
Sunny weather and clear skies
400
We get energy from the food we eat. Where does all the energy in a food web initially come from?
The sun
400
What is the function of the body system in the diagram below?
The exchange carbon dioxide and oxygen with the enviornment
500
A student mixed two clear solutions in a beaker. When mixed, the solution turned light blue and a precipitate formed in the bottom of the beaker.
What evidence indicates that a chemical change occured?
Change in color
Formation of a precipitate
500
A 5kg box is being pushed with a force of 100N. There is a frictional force of 50N. What is the acceleration of the box?
10 m/s2
500
What season is occuring in the southern hemisphere? How would that season affect the amount of daylight hours?
Winter, shorter daylight hours
500
Why are decomposers an important part of the food chain?
Give one example of a decomposer
They break down dead organisms
Fungi (mushrooms), bacteria, earth worms
500
When a person is playing the clarinet in band class, these two body systems work together to allow the body to play the instrument. Body system 1 will allow the body to produce movement and control the muscles in the hands and diaphragm to blow air into the instrument. Body system 2 allows the brain to send signals to the muscles to move the fingers at the precise moments and processes auditory feedback.
Identify the two body systems that work together in the scenario.
The muscular system (movement)
The nervous system (Sending signals)