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,