Ecosystems
Organisms that make their own food.
Producers.
Push or pull on an object
Force.
What is the bouncing of light or sound called?
Reflection
The sun rises in the __________and sets in the _______?
East/ West
True or False
rocks, water, and dirt are biotic things
False
Which best describes grasses, shrubs, and trees?
a. producers b. consumers
c. decomposers d. scavengers
a. Producers
Science tool that measures force
Spring Scale
A clear window is:
transparent, translucent, opaque or absorbed
transparent
The Earth spinning on its axis causes this to happen.
Day and Night or Apparent movement of the sun (shadows)
Weather instrument that measures temperature.
Thermometer.
Where do producers get energy?
The Sun
How do you calculate speed?
Distance divided by time
Sound travels fastest through what type of matter?
Solid
The length of time it takes for the earth to make one complete revolution.
1 Year or 365 days.
What organism in every ecosystem is needed by all others to survive?
Producers (in most cases, plants).
Which of the following is a biotic resource of an ecosystem? (a) Sun (b) Water (c) Tree (d) Rock
c. Tree
Jonathan pulls his chair out to sit down. Is that an example of a balanced or unbalanced force?
Unbalanced
Why does a straw appear broken or bent in a glass of water?
Refraction
What are the 2 reasons we have the seasons?
1. Earths revolution around the sun
2. Earth's tilt on it axis
Short term changes in the conditions in atmosphere (air around you).
Weather.
Organisms that break down dead organic material.
Decomposers.
This is resistance of motion.
Friction.
If there are three bottles of water filled with different amounts of water. If I tap them with a spoon, which bottle will have the highest pitch?
The one filled the most, middle or least
filled the least
This is what Earth spins on.
Its axis.
A force that slows things down when two surfaces rub together is called…
Friction
Organisms that eat other organisms.
Consumers.
A student pushes a box, but it doesn’t move. This means the forces are…
balanced forces
If a sound wave have a low pitch it will also have a low __________.
frequency
When the Earth moves around the sun, this is called…
revolution
__________ is the average weather over a period of time.
a. abiotic b. climate c. biotic d. adaptation
b. Climate
What is the source of all energy in an ecosystem
a. producers b. consumers
c. decomposers d. sun
d. Sun
A heavier object requires more force to move than a lighter object because of this physical property.
MASS
What is needed to form a sound?
A medium or particles to vibrate
Which planet is the third closest to the sun?
a.Earth
b.Neptune
c.Mercury
d.Saturn
a. Earth
This process moves weathered rock from one place to another.
Erosion