Chemistry, 25.03.2021 17:20, Capicus8710
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,
Answers: 2
Chemistry, 22.06.2019 08:00, wizz4865
Why is the bond angle in a water molecule less than the bond angle of methane? a. the central oxygen atom in water has two lone pairs of electrons, whereas the central carbon atom in methane has no lone pairs. b. the central hydrogen atom in water has one lone pair of electrons, whereas the central carbon atom in methane has two lone pairs. c. the central oxygen atom in water has four lone pairs of electrons, whereas the central carbon atom in methane has only one lone pair. d. the central oxygen atom exerts more repulsive force on surrounding atoms than the central carbon atom in methane does. reset next
Answers: 2
Chemistry, 22.06.2019 10:30, cheyennecarrillo14
If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5
Answers: 1
Chemistry, 22.06.2019 11:30, claudr03
If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.
Answers: 3
Chemistry, 22.06.2019 16:30, ddmoorehouseov75lc
Correct relationship between molecular formula and empirical formula
Answers: 1
The Earth’s atmosphere is divided into five layers. In which layer does all life exist?
Question 1...
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