Harvesting Sunlight- Photosynthesis L1.6

Harvesting Sunlight- Photosynthesis L2.2

Objective: KWBAT explain why plants can only grow under certain types of light.

Phenomenon: Australis has the highest rate of skin cancer in the world. Why?

Multiple Choice

What is the source of energy for plants to make food?

• other plants

• the sun

• the moon

• animals

Multiple Select

What do plants need to make food?

• water & oxygen

• water & carbon dioxide

• oxygen & dirt

• carbon dioxide & oxygen

REACTANTS of PHOTOSYNTHESIS

Plants need WATER and CARBON DIOXIDE to make food.

Multiple Choice

How do plants get the water they need to make food?

• roots bring water in from the soil

• the leaves bring water in from the air

• the flowers collect water

• seeds spread out to find water

Multiple Choice

What is the food that plants make called?

• glucose

• oxygen

• leaves

• carbon dioxide

Multiple Choice

Glucose is a kind of --

• meat

• air

• sugar

• leaf

PRODUCTS of PHOTOSYNTHESIS

Plants PRODUCE glucose (sugar) and oxygen

Multiple Choice

Which shows the REACTANTS for photosynthesis?

• oxygen & carbon dioxide

• dirt & oxygen

• water & carbon dioxide

• carbon dioxide & leaves

Multiple Choice

Which gas do plants release during photosynthesis?

• oxygen

• carbon

• helium

• carbon dioxide

Multiple Choice

What are the PRODUCTS of photosynthesis?

• oxygen & glucose

• carbon dioxide & oxygen

• glucose & carbon dioxide

• glucose only

Multiple Choice

How many molecules of carbon dioxide does a plant need to make one molecule of glucose?

• 6

• 55

• 100

• 1

Multiple Choice

What is the correct equation for photosynthesis?

• carbon dioxide + oxygen + sunlight = glucose + water

• water + oxygen = sunlight + carbon dioxide + soil

• glucose + oxygen = sunlight + carbon dioxide + water

• water + carbon dioxide + sunlight = glucose + oxygen

Multiple Choice

How are plants beneficial to animals?

• they eat harmful animals

• they provide oxygen & food for animals

• they provide carbon dioxide for animals

• they produce glucose for animals to eat

Multiple Choice

A popular "pet," in Japan is a plant called marimo, or moss balls. They sink during the night and they float during the day. Based on what you know about plants, why does this happen?

• they become lighter during the day and gain weight at night

• they get larger at night, which causes them to sink

• they turn green at night, and green makes them weigh more

• they perform photosynthesis during the day, which releases bubbles of oxygen, which allows them to float

Multiple Choice

What is the chemical in plants' leaves that performs photosynthesis and causes plants to be a green color?

• stomata

• chlorophyll

• carbon dioxide

• glucose

Multiple Choice

Why would the mouse in jar A have trouble breathing?

• it doesn't have oxygen

• it doesn't have carbon dioxide

• it doesn't have water

• it doesn't have sunlight

Multiple Choice

What needs to be placed where the X is in the formula?

• oxygen

• glucose

• carbon

• sunlight

Multiple Choice

A rug sits in a sunny place on the floor for a long time. Kiara thinks that light from the sun can cause the rug’s color to fade over time. Can light from the sun cause the rug’s color to fade?

• No. Light is not a physical thing, so it cannot change physical things like rugs.

• No. Light can only change things by warming them up, so it cannot cause the rug’s color to fade.

• Yes. The rug can take in energy from the light, causing the rug’s color to fade.

• Yes. Light from the sun can pull energy out of the rug, causing the rug’s color to fade.

Multiple Choice

Fabian uses some glue to fix a broken plate. He puts the glue under a desk lamp but the glue doesn’t dry. Then he puts the glue out in the sun and it dries. Why does light from the sun dry the glue when light from the desk lamp does not?

• Because the glue can take in energy from the light from the sun but not from the light from the lamp.

• Because light from the sun pulls energy out of the glue and light from the desk lamp does not.

• Because the sun gives off a type of light that carries energy, and light from the desk lamp does not.

• Because light from the sun carries heat molecules, and light from the desk lamp does not.

Multiple Choice

Mariah wonders which types of light could heat up a sheet of aluminum. The table below shows what happens when different types of light hit the aluminum. Based on this information, which type of light is more likely to heat up the sheet of aluminum?

• The X-ray light is more likely to heat up the aluminum because the X-ray light can pull energy out of the aluminum when it passes through the aluminum.

• The ultraviolet light is more likely to heat up the aluminum because the ultraviolet light bounces off the aluminum, which means that it has more energy.

• There is no way to know because they are two different types of light, and different types of light can change a material in different ways.

• Neither type of light is likely to heat up the aluminum because the aluminum does not take in energy from either the X-ray light or the ultraviolet light.