3rd Grade Science : 3rd Grade Science

Study concepts, example questions & explanations for 3rd Grade Science

varsity tutors app store varsity tutors android store

Example Questions

Example Question #7 : Explain How Trait Variations Give Mating Advantages

Plants do not need to find mates, so they do not develop variations in their traits.

Possible Answers:

False

True

Correct answer:

False

Explanation:

The statement is false and inaccurate. Plants do have trait variations that lead them to have advantages with attracting "mates." If a flower has more colorful petals, they are more likely to be selected for pollination. These advantages put them in a better position than other organisms. Plants don't attract mates in a traditional sense, but they still must attract pollinators to reproduce and create new plants.

Example Question #8 : Explain How Trait Variations Give Mating Advantages

What is a trait? Example: Male ducks develop brightly colored feathers. This trait helps them stand out to potential mates.

Possible Answers:

A distinguishing quality or characteristic

An ability to do something amazing

A delicious dessert or snack

A level of intelligence above all others

Correct answer:

A distinguishing quality or characteristic

Explanation:

A trait is a quality, feature, or characteristic that stands out or makes something/someone distinguishable. In the example, the duck has brightly colored feathers. This allows him to stand out, and female ducks will be more likely to notice him. Traits can be physical, like the example or behavioral. They are passed down by parents to offspring.

Example Question #1 : Effect Of Habitat On Organism Survival

Camels: Camels are desert animals that have pads on the bottom of their feet. The pads are thick and large and help keep the camel stable. They can close their noses to prevent materials from entering. Camels can eat desert plants to gather water. They can go up to 100 miles without needing to drink any water!

The Sahara Desert: The Sahara Desert is made entirely of sand. It rarely rains and is very dry. There are only a few plants, and they have small leaves. The sand is scorching and moves every time it is touched; when the wind blows, the sand shifts in all directions.

How well would a camel survive in the Sahara Desert compared to other organisms, and why?

 

Possible Answers:

A camel would not survive well in the Sahara Desert when compared to other organisms because its traits are adapted to different habitats.

A camel would survive very well in the Sahara Desert when compared to other organisms because it has traits adapted to this habitat.

A camel would survive less well in the Sahara Desert when compared to other organisms because some of its traits are not adapted to this habitat.

There is not enough information to decide how a camel would survive.

Correct answer:

A camel would survive very well in the Sahara Desert when compared to other organisms because it has traits adapted to this habitat.

Explanation:

When reading the facts about the Sahara Desert and camels, it seems that the organism is perfectly adapted to the habitat. Camels have feet that can walk on the shifting, hot sand, can close their noses during a storm, can go long distances without water, and can eat the desert plants when needed. They have all of the traits or characteristics needed to survive well in a hot, sandy desert.

Example Question #1 : Argue That In A Habitat Some Organisms Survive Well

Amazon Rainforest: In the Amazon Rainforest is rains almost every day. There are very tall trees that create a canopy, and the ground of the forest is covered in plants. The plants on the ground try to grow wide or tall to reach sunlight. The very tall trees can block much of the sunlight.

Bromeliads: Bromeliads grow on tree trunks and branches and wrap their roots around the trees. They need wet habitats to grow well. They have a center portion like a cup or bowl that collects water. Their leaves are waxy, and the water slides into the center. The leaves are long and curved to collect water.
 
Based on the information provided, how well would a bromeliad survive in the Amazon Rainforest?
Possible Answers:

There is not enough information to decide how the bromeliad would survive.

The bromeliad would grow very well in the Amazon Rainforest because its characteristics are adapted for this type of habitat.

The bromeliad would grow less well in the Amazon Rainforest than other habitats because its characteristics are not well adapted for this type of habitat.

The bromeliad would not grow very well in the Amazon Rainforest because its characteristics are not adapted for this type of habitat.

Correct answer:

The bromeliad would grow very well in the Amazon Rainforest because its characteristics are adapted for this type of habitat.

Explanation:

According to the information provided, the bromeliad would survive very well in the Amazon Rainforest. This plant has characteristics or traits that are adapted for survival in this type of environment. It needs a wet environment, and the rainforest receives rain daily. The plant is built like a cup or bowl for collecting water and grows around trees, which the rainforest has plenty of.

Example Question #101 : 3rd Grade Science

In a habitat, all organisms will continue to survive well despite any changes or relocations that may occur.

Possible Answers:

True

False

Correct answer:

False

Explanation:

This statement is false. Not all organisms will continue to survive well in a habitat if some changes or relocations occur. If an animal is picked up and moved somewhere new, likely, it will not survive at all because it doesn't have the necessary traits to adapt. If a plant suddenly has no sunlight, it will not survive because it cannot make food, which is vital to life. Some organisms may survive well in a particular place, but the outcome may be different if they move or a change is made to the food chain.

Example Question #102 : 3rd Grade Science

Bromeliads grow on tree trunks and branches and wrap their roots around the trees. They need wet habitats to grow well. They have a center portion like a cup or bowl that collects water. Their leaves are waxy, and the water slides into the center. The leaves are long and curved to collect water.

Which habitat would allow a bromeliad to survive well, and why?

Possible Answers:

A swamp because it is wet, has lots of trees, and gets rain.

A tundra because they are covered in ice, which is wet and has freezing cold temperatures.

A grassland because there are lots of open rolling meadows for the bromeliad to grow in.

A desert because bromeliads like scorching places and this habitat is always hot.

Correct answer:

A swamp because it is wet, has lots of trees, and gets rain.

Explanation:

The habitat that would allow a bromeliad to survive well is a swamp. Bromeliads need lots of water and a wet habitat to live in, a swamp provides this. They also grow by twisting around trees, and a swamp is filled with trees. A swamp would meet the needs of the plant.

Example Question #5 : Effect Of Habitat On Organism Survival

Amazon Rainforest: In the Amazon Rainforest is rains almost every day. There are very tall trees that create a canopy, and the ground of the forest is covered in plants. The plants on the ground try to grow wide or tall to reach sunlight. The very tall trees can block much of the sunlight.

Bromeliads: Bromeliads grow on tree trunks and branches and wrap their roots around the trees. They need wet habitats to grow well. They have a center portion like a cup or bowl that collects water. Their leaves are waxy, and the water slides into the center. The leaves are long and curved to collect water.
 
Janine says that she believes bromeliads would do well in the Amazon Rainforest, while Natalie thinks they will not do well in that habitat. Who (if anyone) is correct and has an argument that supports their point of view?
Possible Answers:

Both Natalie and Janine are partially correct. It depends on the plant and whether it feels like the Amazon Rainforest is where it wants to live.

Janine is correct. Bromeliads would do well in the rainforest because they are adapted to wet habitats, shaped to collect water, so they stay hydrated and grow on trees that are plentiful in the rainforest.

Natalie is correct. Bromeliads would not do well in the Amazon Rainforest habitat because they would receive too much water, not enough sunlight, and would not have an adequate place to live.

Neither Natalie and Janine are correct with their explanations of why bromeliads would or would not do well in the Amazon Rainforest habitat.

Correct answer:

Janine is correct. Bromeliads would do well in the rainforest because they are adapted to wet habitats, shaped to collect water, so they stay hydrated and grow on trees that are plentiful in the rainforest.

Explanation:

In this specific argument, Janine is correct and supports her argument using relevant evidence from the passage. "Bromeliads would do well in the rainforest because they are adapted to wet habitats, shaped to collect water, so they stay hydrated and grow on trees that are plentiful in the rainforest." is a concise explanation as to why bromeliads would survive well in the Amazon Rainforest. Some organisms will survive well in an environment because they are adapted to the conditions in the area.

Example Question #103 : 3rd Grade Science

Which animal would survive well living in or around a freshwater lake?

 

Possible Answers:

A bass

A sea turtle

A tuna fish

A stingray

Correct answer:

A bass

Explanation:

A bass would survive in a freshwater lake because it is a freshwater fish. A stingray, sea turtle, and tuna fish are all found in saltwater habitats and could not survive in a body of freshwater. The bass hunts other bugs and small fish that live in lakes, so it has a food source and the characteristics to survive well.

Example Question #104 : 3rd Grade Science

Grasslands - The grasslands in the Northern hemisphere are vast, open terrains with flowers and grass. There is enough rain to support small amounts of trees and lots of grass. The soil is thin and dry, and there are often wildfires. The temperatures range from very cold (in the negatives) to comfortable (in the mid-70's).

Which animal would survive well living in a grassland habitat?

Possible Answers:

A coyote

A panda

A polar bear

A parrot

Correct answer:

A coyote

Explanation:

A coyote would survive well in a grasslands area. A coyote would be able to adapt to the type of prey that lives in the area, the weather conditions, and would be able to hunt in the tall grass and trees. A polar bear would not be suited for grasslands because of its thick layer of fat and white fur, it would be too warm for polar bears, and there is no food source for them. Parrots live in tropical climates and high in trees, which grasslands do not have. Panda bears survive by eating bamboo, and there is no bamboo in the grasslands habitats.

Example Question #105 : 3rd Grade Science

Alligators - Alligators are freshwater reptiles that need warm, wet environments to live. They can live in areas with short periods of cold but cannot stand long, harsh winters. They can eat a wide variety of prey (fish, turtles, small/medium mammals, etc.) and can move from water source to water source. They can live for short periods in saltwater but need freshwater long term.

Which type of habitat would the alligator survive well in, and why?

Possible Answers:

An alligator would survive well in a swamp because it has fresh water and is very wet.

An alligator would survive well in a grassland habitat because there are few trees.

An alligator would survive well in a desert because it is warm and does not have periods of cold.

An alligator would survive well in a tundra because there is a lot of freezing water to hunt in.

Correct answer:

An alligator would survive well in a swamp because it has fresh water and is very wet.

Explanation:

An alligator needs warmer weather and can only survive short periods of cold. It also needs access to freshwater and prefers to be in the water for a majority of its time. Due to these specific requirements, it would be best suited to survive well in a swamp. A swamp is very wet and has access to fresh water year-round. Many wetlands are located in warm climates and would provide the alligator with shelter and plenty of hunting opportunities.

Learning Tools by Varsity Tutors