The Earth’s atmosphere is divided into five layers. In which layer does all life exist?

Question 1 options:

Exosphere


Stratosphere


Mesosphere


Troposphere

Question 2

As you travel from the surface up through the atmosphere in outer space, the gases or air pressure becomes



Question 2 options:

more dense/increases


less dense/decreases


Higher in temperature


Consistently lower in temperate

Question 3

This gas is found in the stratosphere where it helps protect us from UV radiation.

Question 3 options:

Ozone


Oxygen


Nitrogen


Carbon dioxide

Question 4

What is the most abundant gas in our atmosphere?



Question 4 options:

oxygen


hydrogen


nitrogen


water vapor

Question 5 (1 point)
This vascular tissue carries water absorbed by the roots to the other parts of the plant.



Question 5 options:

phloem


xylem

Question 6 (1 point)
The protist seen here is called euglena. It is both animal-like and plant-like. It eats food but it also has chloroplasts like a plant cell, in order to make food. The euglena has one structure that helps it move. It is visible here. What is that cellular structure?





Question 6 options:

Cilia


Flagellum


pseudopod


Golgi Bodies

Question 7 (1 point)
Which kingdom is MOST LIKELY to contain organisms that are decomposers?



Question 7 options:

Kingdom Fungi


Kingdom Eubacteria


Kingdom Animalia


Kingdom Plantate

Question 8 (1 point)
In the oceans the colder water sinks into deep basins, while warmer water stays closer to the surface. The water then moves around the ocean basin. This causes



Question 8 options:

Tidal waves


Wind Drifts


Ocean convection currents


Plate tectonics

Question 9 (1 point)
Which best explains how insects help flowering plants in reproduction?



Question 9 options:

Insects help keep predators, like birds, away from flowers' seeds


Insects store food in flowers, providing nutrients flowers need to make seeds.


Crawling insects cause pollen to fall on the ground beneath flowering plants.


As they fly, insects spread pollen that sticks to their bodies from the flowers.

Question 10 (1 point)
Jaime is picking out a skillet for his mother as a birthday present. He is looking at two skillets, one with a plastic handle and one with a metal handle. Thinking just about safety, which handle would you recommend to Jaime and why?

Question 10 options:

The metal handle, because it will last longer.


The plastic handle, because it is light weight


The metal handle, because it is a good conductor


The plastic handle, because it is a good insulator.

Question 11 (1 point)
Fungi is a very simple eukaryotic organism. Unlike plants and some protists, fungi is a consumer. This example lives in/on a tree. How is this fungus consuming food in the picture?







Question 11 options:

The roots of the fungus can absorb nutrients from the soil.


The hyphae, or feeding structures, reach deep into the wood to obtain nutrients.



The white cap of the fungus traps small insects and other organisms as they pass by.



The cap of the fungus can absorb chemicals from the air, like carbon and oxygen, and use the gases to make food.

Question 12 (1 point)
The type of energy stored in food and batteries is



Question 12 options:

kinetic energy


chemical energy


mechanical energy


electromagnetic energy

Question 13 (1 point)
The Law of conservation of energy states that energy cannot be



Question 13 options:

Stopped or started


Hot or cold


created or destroyed


Kinetic or potential

Question 14 (1 point)
A current-carrying coil of wire with many loops that can become magnetized is called a(n)



Question 14 options:

Insulator


Electromagnet


Resistor


Aurora

Question 15 (1 point)
Heat transfers occurs



Question 15 options:

Only from cold to hot


Both a and c


Only from hot to cold


It doesn’t transfer

Question 16 (1 point)
Malcolm's class has been assigned a project in which it is to build a four-wheeled vehicle to transport a can of soda across the classroom. The car will be powered by stretching rubber bands around an axle before releasing the vehicle on the floor.

The vehicle will be powered by transforming _______ energy into _______ energy.



Question 16 options:

Thermal; mechanical


Mechanical, thermal,


Kinetic, elastic potential


Elastic potential, kinetic,