CTBA 4 Concepts Lesson

CTBA 4 Concepts

Online Lesson

SHADOWS

1. Shadows are caused by objects blocking light.

2. A shadow’s appearance changes because of the way the sun seems to move through the sky.

3. Shadows that point the same direction and are about the same length show shadows at the same time of day.

Multiple Choice

Shadows are caused by objects __________ light.

• showing

• hitting

• blocking

• seeing

Multiple Choice

A shadow’s appearance changes _____________________________.

• because of the moon moving through the sky.

• because of the way the sun seems to move through the sky.

• because of different types of light beams.

Multiple Choice

Shadows that point the same direction and are about the same length show ________________.

• shadows at a different time of day

• shadows of the same object at different times of day

• shadows at the same time of day

SHADOWS

• Shadows are shortest when the sun is the highest in the sky (around noon/12pm)

• Shadows are longest when the sun is lower in the sky (sunrise and sunset).

• Shadows point AWAY from the sun.

Multiple Choice

Shadows are shortest when the sun is the _________ in the sky (around noon/12pm).

• highest

• lowest

Multiple Choice

Shadows are longest when the sun is ________ in the sky (sunrise and sunset).

• lower

• higher

Seasons are caused by Earth’s revolution around the sun, which takes one year or 365 days.

• When the Northern Hemisphere is tilted toward the sun, it is Summer.

• When the Northern Hemisphere is tilted away from the sun, it is Winter.

• The Seasons are Winter, Spring, Summer, Fall

Multiple Choice

When the Northern Hemisphere is tilted toward the sun, it is ________.

• Winter

• Summer

• Fall

• Spring

Multiple Choice

When the Northern Hemisphere is tilted away from the sun, it is ________.

• Winter

• Summer

• Fall

• Spring

When the seasons change things around us change.

In spring days get longer, temperatures get warmer, animals migrate home, some animals come out of hibernation, flowers and trees blossom.

Multiple Select

Check all that apply:

In Spring, _______

• days get longer

• temperatures get warmer

• animals migrate back to their homes

• animals come out of hibernation

• flowers and trees blossom

It takes one year (365 days, 12 months) for the Earth to make one complete revolution around the Sun.

If we were to cut this diagram into 4, what would one week look like? One month? Three months?

One week would look something like this ...

----------------------->

The Northern Hemisphere experiences the opposite season than the Southern Hemisphere experiences.

• If it's SUMMER in the Northern Hemisphere it's WINTER in the Southern Hemisphere.

• If it's WINTER in the Northern Hemisphere it's SUMMER in the Southern Hemisphere.

Multiple Choice

If it's SUMMER in the Northern Hemisphere, it's __________in the Southern Hemisphere.

• winter

• spring

• summer

• fall

Multiple Choice

If it's WINTER in the Northern Hemisphere, it's __________in the Southern Hemisphere.

• winter

• spring

• summer

• fall

WATER CYCLE

• Evaporation - When water is heated and changes from a liquid to a gas

• Condensation - When water vapor is cooled and changes from a gas to a liquid (clouds, fog)

• Precipitation - Rain, sleet, snow, hail that falls from clouds in the sky

Multiple Choice

Condensation - When water vapor is __________ and changes from a gas to a liquid (clouds, fog)

• warmed

• cooled

• heated

• precipitates

The Sun, Producers & Consumers

• The SUN provides all of the energy for Earth.

• To REMOVE a plant's energy, we would take away SUNLIGHT.

Multiple Choice

How do we remove most of a plant's energy?

• take away soil

• take away sunlight

Producers & Consumers

• Producers - An organism that uses sunlight to make its own food for energy (plants)

• Consumers - An organism that has to eat for energy (animals) Herbivores - only eat plants Omnivores - eat both plants and animals

  Carnivores - only eat animals

Multiple Select

Check all of the PRODUCERS.

• grass

• pumpkins

• cats

• sea grass

Multiple Select

Check all of the CONSUMERS.

• mouse

• seahorse

• pickles

• lion

Photosynthesis - how plants make their own food.

• water + sunlight + carbon dioxide = sugar (glucose) + oxygen

• If you take away sunlight, water, or carbon dioxide, the producer will die.

Plants TAKE IN carbon dioxide and RELEASE oxygen.

• water + sunlight + carbon dioxide = sugar (glucose) + oxygen

• If you take away sunlight, water, or carbon dioxide, the producer will die.

Multiple Choice

Plants ___________ carbon dioxide.

• take in

• release

Multiple Choice

Plants ___________ oxygen.

• take in

• release

Food Chains and Food Webs

• Food Web - An interconnected set of food chains.

• All energy begins with the Sun.

• The arrows show which direction the energy is moving.

Multiple Choice

All energy BEGINS with ________________.

• the moon

• animals

• the Sun

• an electrical outlet

Multiple Choice

The arrows show which direction the _________ is moving.

• oxygen

• carbon dioxide

• eating

• energy

Changes in an ecosystem can affect a food web.

• If an organism’s food source increases, then the organism’s population will increase.

• If an organism’s food source decreases, then the organism’s population will decrease.

Multiple Choice

TRUE or FALSE:

If an organism’s food source increases, then the organism’s population will increase.

• True

• False

Multiple Choice

TRUE or FALSE:

If an organism’s food source decreases, then the organism’s population will decrease.

• True

• False

Changes in an ecosystem can affect a food web.

• If competition for food DECREASES, the organisms’ population may INCREASE.

• If competition for food INCREASES, the organisms’ population may DECREASE.

Multiple Choice

TRUE or FALSE:

If competition for food DECREASES, the organisms’ population may INCREASE.

• True

• False

Multiple Choice

TRUE or FALSE:

If competition for food INCREASES, the organisms’ population may DECREASE.

• True

• False