Ecosystems
What is the main function of roots?
A) Capture sunlight
B) Absorb water and nutrients
C) Reproduce seeds
D) Release oxygen
B) Absorb water and nutrients
When wood burns, what happens to the matter?
A) It disappears
B) It is destroyed
C) It changes into ash and gases
D) It turns into sunlight
C) It changes into ash and gases
What causes day and night?
A) Earth's rotation
B) Earth's revolution around the sun
C) Earth's tilt
D) The moon
A) Earth's rotation
Energy transfer occurs when:
A) A flashlight converts electrical energy to light
B) Ice melts
C) Water evaporates
D) A seed grows
A) A flashlight converts electrical energy to light
What is the water cycle?
A: The water cycle describes how water moves through Earth's systems
B: The water cycle describes how water goes into streams and oceans
C: The water cycle describes groundwater
D: The water cycle describes rain
A: The water cycle describes how water moves through Earth's systems
Why are plant structures described as a system?
A) They work independently
B) They compete with each other
C) They rely on animals
D) They work together to support survival
D) They work together to support survival
Which statement best explains conservation of matter?
A) New matter can be created
B) Matter can be destroyed
C)Matter is reused by plants
D) Matter changes form, but the total amount stays the same
D) Matter changes form, but the total amount stays the same
Which force keeps planets in orbit around the sun?
Gravity
Burning fossil fuels most directly affects which system?
A: Biosphere (Living things)
B: Geosphere (solid part of the Earth)
C: Atmosphere (Air)
D: Hydrosphere (Water)
C: Atmosphere (Air)
What causes evaporation to occur?
A) Cooling temperatures
B) Heavy clouds
C) Wind
D) Heat from the sun
D) Heat from the sun
How does energy travel in a food web?
From eaten to eaten by
What are some signs that a chemical reaction has occurred?
Change in color, smell, texture, production of light, gas production
1 year/ 365.25 days
Which material is the best conductor?
A) Rubber
B) Wood
C) Metal
D) Plastic
C) Metal
What happens during condensation?
A) Water turns into vapor
B) Rain falls to earth
C) Water vapor cools and forms liquid drops
D) Water collects underground
C) Water vapor cools and forms liquid drops
Which example shows ecosystem stability being disrupted?
A) A new plant species grows
B) A predator disappears from the food chain
C) Rain falls
D) A plant produces seeds
B) A predator disappears from the food chain
Which example is a chemical change?
A) Chopping wood
B) Freezing ice cubes
C) Ripping paper
D) Burning a candle
D) Burning a candle
A) Mars
B) Neptune
C) Jupiter
D) Earth
A) Mars
What materials are good insulators?
Wood
Rubber
Plastic
When matter changes from liquid to gas, it is called:
evaporation
What are two things that could happen if producers disappeared?
Food chains would collapse due to a lack of food sources for many animals
Animals would not have oxygen to breathe
What are the two differences between a chemical change and a physical change?
-c- cannot be reversed, p- can be reversible
-c-creates new matter in the product, p- matter doesn't change
What connection is there between planet size and gravity?
The larger the planet, the more gravity
The smaller the planet/moon, the higher you can jump
What makes an energy source renewable?
Give one example of a renewable energy source
Renewable energy sources can continue to create energy without depleting the supply
wind power, solar power, hydropower (water)
Why is the water cycle described as a cycle?
Please include a diagram
It repeats continuously
Evaporation > Condensation > Precipitation > Collection > Repeat