Producers, Consumers, & Decomposers
What is the main provider of energy in an ecosystem?
The sun.
What would happen to the wildlife in the forest if there was a wild fire?
All trees would be burned so the animals would have to move somewhere else or else they die since they have no food.
What is the invisible force that pulls objects to the ground called?
Gravity
Examples of this simple machine are used to hold things together. It is made up of an inclined plane wrapped around a cylinder.
a screw
Name three different consumers.
depends on student answers
What is a Producer?
An organism that makes it's own food.
What negative effects do humans have on ecosystems?
Over consumption, pollution, deforestation
Does gravitational force affect the motion of an object?
Yes, gravitational force pulls objects towards the center of the Earth, causing them to fall when dropped.
A rod attached to the center of a wheel is called
axel
What is a pulley?
a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim
What is the difference between a consumer and a decomposer?
A consumer eats living organisms and a decomposer eats dead animals.
There are 100 coyotes and 100 deer. What would happen if the coyote eat 70% of the deer population?
A fourth grade student wanted to explore the effects on balanced and unbalanced forces on an object that is at rest. Which of the following investigation shows a balanced force?
A.Two dogs of equal weight play tug of war on a toy.
B.Three adults push a large box across the floor.
C.A book sits on top of a desk.
D.A fourth grader pushes a shopping cart in the store.
~A.Two dogs of equal weight play tug of war on a toy.
~C.A book sits on top of a desk.
This simple machine can be used to lift a weight. It has a fulcrum, or pivot point, which can be located in the center, near the end or at the end.
Lever
Which organisms provide energy for the plants?
None. Plants get their energy from the sun.
Put the list in order of transfer of energy.
1.Sun
2. Decomposer
3.Producer
4.Comsumer
Sun->Producer->Consumer-> Decomposer
True or False?
Pollution is beneficial to the environment.
False
As an object moves with more force, what will happen to its speed?
Increase
Tommy is at the zoo with his mother, father, and little sister. His sister is 12 years old and is in a wheelchair. Tommy wants to take his sister to go see the Gorilla exhibit but there are stairs. What statement best describes the usage of a machine to help Tommy and his sister see the gorillas?
Tommy can ask his mother or father to help his sister push the wheelchair up the ramp.
In the food chain below, if the mouse became extinct, what would happen?
sun → grass → mouse → snake → hawk
The hawk and snake might die.
Which of the following is not a consumer?
Lion, Eagle, Racoon, Butterfly, Worm, Caterpillar, Frog, Lizard, Bear, Deer
Worm
During Hurricane Helene, the crops in the farmer's field died because they received too much water. The racoons and deer in the area depended on those crops for food. What will happen to their population?
They both will decline because their food source has decrease.
Motion occurs when one object changes ________________ in relation to another object.
Position
A teacher is moving classrooms across the school and wants to make the move as easy as possible. Which of the simple machines should they use to help them?
An inclined plane
A skydiver jumps out of a plane. She falls downward at a very fast speed. When she opens her parachute, she slows down. What force pulled the skydiver to the ground?
Gravity