# 5th Grade Science : Model how energy in animals' food originated from the sun

## Example Questions

### Example Question #1 : Energy From Animals' Food

Which of the following best describes how a carnivore gets energy from the sun.

A shark prefers to hunt in warmer water where seals and sea lions go in winter to give birth to their young.

A plant uses photosynthesis to get its energy from the sun, and then a deer gets its energy by eating the plant. Then when a wolf eats the deer, it receives energy from the deer.

Lions do much of their hunting at sunrise when nocturnal animals are ending their day and other animals are just getting their day started.

A grizzly bear sleeps all winter when it is mostly dark and cold outside, and then is active all summer when the weather is nicer.

A plant uses photosynthesis to get its energy from the sun, and then a deer gets its energy by eating the plant. Then when a wolf eats the deer, it receives energy from the deer.

Explanation:

Photosynthesis is the way in which plants convert the sun's energy into their own energy. And since animals get their energy from food, when an animal eats a plant it gets its plant-based energy indirectly from the sun, because that's how the plant itself got energy. Then when a carnivore eats a plant-eating animal, the carnivore gets energy from the herbivore, who got its energy from the plant, which got it from the sun. So even meat-eaters indirectly get their energy from the sun.

### Example Question #2 : Energy From Animals' Food

The leopard is a carnivore that eats impalas and other deer-like herbivores on the African savannah. Which of the following would be a potential consequence to leopards if a drought eliminated most of the plants in the leopard's habitat?

The herbivores that the leopard eats would die off from starvation, and the leopard would be left without a food source.

The leopard would be mostly fine, since it eats meat and not plants.

The leopard's teeth are sharp enough that it could survive by eating rocks and gravel until the drought was over.

Without plants to hide behind, impalas and other herbivores would be easier to catch and leopards would have an overabundance of food.

The herbivores that the leopard eats would die off from starvation, and the leopard would be left without a food source.

Explanation:

The food chain is highly interdependent in any given habitat, so if the plant-eating impalas and deer that leopards eat were suddenly to lose their plant-based food sources, they would die out and the leopards wouldn't have much left to eat. All nutritional energy comes from the sun: plants use chlorophyll to photosynthesize the sun's energy into plant energy, and then animals either feed on plants for that energy or they feed on the animals that have eaten that plant energy. A loss in plants means that the solar energy that supplies even the most ferocious carnivores will be less plentiful.

### Example Question #3 : Energy From Animals' Food

Which of the following animals would lose its nutritional energy if its habitat were to no longer receive sunlight?

Hawks, who eat plant-eating mice.

All of the answers are correct.

None of the answers are correct.

Vultures, who feast on deceased mice and hawks.

Mice, who eat plants that get their energy through photosynthesis.

All of the answers are correct.

Explanation:

The food chain begins with the sun: plants get their energy by photosynthesizing sunlight into energy, and then herbivores eat those plants to get their energy. Carnivores who then eat the herbivores are getting that sunlight passed along from sun to plant to herbivore to carnivore. So if the sun were to no longer shine in this habitat, plants would not convert sunlight to energy, so mice would die, meaning that the hawks would have nothing to eat, and the vultures wouldn't get to feast on the scraps.

### Example Question #4 : Energy From Animals' Food

Where does the energy passed from organism to organism in this food web originate?

autotrophs

the highest trophic level

heterotrophs

the sun

the sun

Explanation:

Through the photosynthesis process, producers, such as grass, absorb the sun's light energy to produce food (stored sugar and starches). Consumers cannot make their own food, so they have to consume other organisms. The food of almost any kind of animal can be traced back to plants and the sun. Organisms are related in food webs in which some animals eat plants for food and other animals eat the animals that eat plants. Some organisms, such as fungi and bacteria, break down dead organisms (both plants or plant parts and animals) and therefore operate as “decomposers.” Decomposition eventually restores (recycles) some materials back to the soil. Organisms can survive only in environments in which their particular needs are met.

### Example Question #5 : Energy From Animals' Food

Which of the following shows the movement of energy through a food chain in the correct order?

the sun -> producers -> consumers

the sun -> autotrophs -> heterotrophs

the sun -> plants ->animals

all of these

none of these

all of these

Explanation:

Through the photosynthesis process, producers, such as grass, absorb the sun's light energy to produce food (stored sugar and starches). Consumers cannot make their own food, so they have to consume other organisms. The food of almost any kind of animal can be traced back to plants and the sun. Organisms are related in food webs in which some animals eat plants for food and other animals eat the animals that eat plants. Some organisms, such as fungi and bacteria, break down dead organisms (both plants or plant parts and animals) and therefore operate as “decomposers.” Decomposition eventually restores (recycles) some materials back to the soil. Organisms can survive only in environments in which their particular needs are met.

### Example Question #6 : Energy From Animals' Food

Which statement about the flow of energy in an ecosystem is correct?

Energy flows from the Sun to consumers.

Energy flows from the Sun to decomposers.

Energy flows from the Sun to producers.

Energy does not flow from the Sun.

Energy flows from the Sun to producers.

Explanation:

All nutritional energy comes from the Sun: plants use chlorophyll to photosynthesize the Sun's energy into plant energy, and then animals either feed on plants for that energy or they feed on the animals that have eaten that plant energy. The food chain begins with the Sun and then the energy flows to producers.

### Example Question #7 : Energy From Animals' Food

Which object in the food chain would have an arrow coming from it, but no arrow going to it?

The Sun

A lake

A plant

A grasshopper

The Sun

Explanation:

All nutritional energy comes from the Sun: plants use chlorophyll to photosynthesize the Sun's energy into plant energy. Then animals either feed on plants for that energy, or they feed on the animals that have eaten that plant energy. An arrow would be facing outwards, displaying energy leaving the Sun and being consumed by a producer, but no arrow facing towards it because the Sun does not consume energy in the food chain.

### Example Question #8 : Energy From Animals' Food

Plants make up most of Earth's organic material. What would happen to plants if there were no Sun?

They would just use photosynthesis to keep making their food.

They would get their energy from the water they absorb.

They would die because they would have no source of energy.

They would begin to eat consumers to get nutrients.

They would die because they would have no source of energy.

Explanation:

Producers rely on the Sun to make the food needed to survive. Through photosynthesis, plants convert sunlight and carbon dioxide into oxygen, sugar, and carbohydrates. Without the Sun, plants would be missing an essential "ingredient" to create their nutrients and would not survive.

### Example Question #9 : Energy From Animals' Food

For plants to live and grow, they need an energy source.  Which best describes how plants get the energy they need to live and grow?

They get energy from consuming the soil.

They get energy from absorbing solar energy.

They get energy from consuming water.

They get energy by breaking down organisms.

They get energy from absorbing solar energy.

Explanation:

Plants' nutritional energy comes from the Sun. Plants use chlorophyll to photosynthesize the Sun's energy into plant energy. Through the photosynthesis process, producers, such as grass, absorb the Sun's light energy to produce food (stored sugar and starches). Photosynthesis is how plants convert the Sun's energy into their energy.

### Example Question #10 : Energy From Animals' Food

A meadow is an ecosystem where snakes and rabbits live. In which order does energy flow through this meadow ecosystem?

Grass → Snake → Rabbit → Sun

Sun → Grass → Rabbit → Snake

Grass → Rabbit → Snake → Sun

Sun → Grass → Snake → Rabbit