Matter/Force and Motion
A cup of ice was left out, it is now a liquid. What type of change is this?
Melting/Physical Change
Gulf Stream
Which best models a multicellular organism?
ship at sea
closed terrarium
team playing basketball
a singer performing their own music
team playing basketball
Describe Friction
When two things rub against each other to slow down motion
Give 3 examples of an abiotic factor.
sun
water
temperature
rocks
Tyler placed a bottle of water in the freezer to cool it down. He forgot the bottle in the freezer overnight. In the morning he noticed several differences. The water:
was solid,
the water did not look as transparent,
the bottle changed shape as the liquid had expanded.
His younger sister asked him if the weight had changed. What should he tell his sister?
The weight does not change because the amount of water stayed the same.
What kind of weather would be associated with a low pressure system? (Be Specific)
Stormy
Why do humans have multiple organ systems?
Each system performs a different task that allows human to do things
Describe motion when the forces are balanced and unbalanced.
Balanced forces are no movement and unbalanced forces there is movement.
How do decomposers help an ecosystem?
Decomposers break down dead organisms and put the nutrients back into the earth.
Why are some materials considered to be good conductors of heat?
It is sunny with a temperature of 68 degrees Fahrenheit, but a weather report shows a drop in barometric pressure. How will the weather change?
mostly sunny and no wind
mostly sunny and windy
rainy and windy
rainy and no wind
Rainy and windy
Name an acquired train for a plant.
color of the flowers
A curved line on a distance time graph describes what kind of motion?
Acceleration
How would the deer population be affected if houses started being built on the forest it lives in?
The deer population would decrease because their would be a decrease in resources.
A student puts 20 pounds of bricks in one wagon and 30 pounds of bricks in another identical wagon. The same force is applied to both wagons, and their speed is tracked for 20 seconds. Explain how the bricks affect the motion of the wagaons.
The wagon with 20 pounds of bricks will move faster than the wagon with 30 pounds of bricks.
OR
The wagon with the 30 pounds of bricks will move slower than the wagon with the 20 pounds of bricks.
Describe the movement of air?
Air moves from an area of high pressure to an area of low pressure
Look at the observation recorded for a plant:
- the average pea seed size was smaller than in previous years
- plants at the edges of the field were smaller than plants in the middle of the field
- 3/4 of the pea plants had purple flowers, and 1/4 had white flowers
- the pea plants growing near a stream at the edge of the field were darker green than the other pea plansts
Which is an inherited trait in the pea plants?
flower color
This force pulls an object towards the center of earth.
Gravity
This is a food chain in an ocean ecosystem.
plankton → minnows → tuna
The tuna population decreases because of overfishing. Describe the effect of the decrease in the tuna population on the other populations in the food chain.
The plankton will population will decrease because the minnow population will increase.
All of the runners ran 200m. Which runner ran the fastest and how do you know?
Fynn: 20.05 seconds
Flo: 21.24 seconds
Michael: 19.32 seconds
Yani: 19.26 seconds
Michael because he ran the 200m is less time.
Describe how the sun fuels the water cycle.
The sun provides energy to help the water cycle flow.
How does the digestive system and the circulatory system differ in how they help the body obtain nutrients?
The digestive system breaks down food into usable nutrients and the circulatory system carries the nutrients through out the body
A student says heavier objects always move faster than lighter objects. Use force and motion to explain why this may not always be true.
A heavier object requires more force and it depends on how much force is used to push each object.
I am a mix of fresh and salt water.
My water is brackish.
You can find oysters, crabs, and crocodiles in my ecosystem.
Estuary