QA#2 Review Lesson Mastery Peek

​QA#2 Topic Review

By Sarah O'Steen

Variables in an Experimental Design.

Match

How should the student design an investigation to test how gravity affects a rock when it is dropped into sand?

• The measurement of the crater in the sand.

• The type of rock.

• The type of sand.

• The container in which the sand is in.

• The drop height of the rock.

Dependent Variable

Controlled Variable

Controlled Variable

Controlled Variable.

Independent Variable

• Dependent Variable

• Controlled Variable

• Controlled Variable

• Controlled Variable.

• Independent Variable

Types of Variables in an Experiment:

(The Change)
The independent variable is the thing that is being tested. This is what is being changed in the experiment.

​Independent Variable

(The Observed)
The dependent is something that happens because of the independent variable (the change).

​Dependent Variable

Controlled Variable

​(The Same)
The controlled variable stays the same in the experiment. These are the things like the tools, objects, the things that are not changed.

Multiple Choice

A variable that is not changed, or remains constant in a scientific experiment.

• Controlled Variable

• Independent Variable

• Dependent Variable

• Scientific Experiment

Multiple Choice

A variable that is changed in a scientific experiment.

• Controlled Variable

• Independent Variable

• Dependent Variable

• Scientific Experiment

Multiple Choice

The measurable outcome in a scientific experiment.

• Controlled Variable

• Independent Variable

• Dependent Variable

• Scientific Experiment

Types of Variables in an Experiment:

(The Change)
The independent variable is the thing that is being tested. This is what is being changed in the experiment.

​Independent Variable

(The Observed)
The dependent is something that happens because of the independent variable (the change).

​Dependent Variable

Controlled Variable

​(The Same)
The controlled variable stays the same in the experiment. These are the things like the tools, objects, the things that are not changed.

Drag and Drop

To investigate the hypothesis, the student will use

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setup for each trial. In the first test, the balloon will be filled with a​

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and released from the starting point on the string, which is the​

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. In the second test, the balloon will be filled with a ​

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and released from the same starting point, which is ​

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. To determine whether the hypothesis is supported, the student will measure and compare the distance the balloon travels in each test.

Drag these tiles and drop them in the correct blank above

the same balloon and straw rocket

small amount of air

larger amount of air

tied end

in the same spot

two different balloons 

attach a straw

different spots

soft push 

open end

Multiple Choice

Experiment: How does the flavor of ice cream affect the speed of melting?

The flavor of ice cream is the ___________ variable.

• independent

• dependent

Multiple Choice

Experiment: How does watching TV during studying affect a student’s test grades?

The students grades are the ___________ variable.

• independent
• dependent

Multiple Choice

You can have more than one independent variable in a controlled experiment.

• True
• False

Match

How should the student design an investigation to test how gravity affects a rock when it is dropped into sand?

• The measurement of the crater in the sand.

• The type of rock.

• The type of sand.

• The container in which the sand is in.

• The drop height of the rock.

Dependent Variable

Controlled Variable

Controlled Variable

Controlled Variable.

Independent Variable

• Dependent Variable

• Controlled Variable

• Controlled Variable

• Controlled Variable.

• Independent Variable

Multiple Choice

Students are designing an experiment to test the force of gravity. The steps are as followed: 1. Mark a starting point on the ramp. 2. Use a spring scale to pull a book up the ramp for 10 seconds. 3. Record the amount of Force (in Newtons) needed to pull the book up the ramp. 4. Repeat steps 1-3 for the three trials with each book that has a different mass. What should the student's do to improve this experiment?

• Drag the same book across three different ramp heights.

• Use a different spring scale to make sure the results are reliable.

• Measure how long it takes each book to stop after being pulled.

• Change the experiment to test the force of friction.

Sun-Earth-Moon

(Most Important Shadows & Time)

-Earth spinning on its axis

-takes 24 hours/1 day

-gives us our day and night cycle

-causes shadows

-makes the Sun look like it's moving (apparent movement of the Sun)

​

Earth's Rotation

- Earth revolves around the Sun, this is it's orbit

-it takes Earth 365 days to complete one revolution around the Sun

-the Earth's revolution + the Earth's tilt = Seasons

-when the Earth is tilted toward the Sun it is summer

-when the Earth is tilted away from the Sun it is winter

​

​​ Revolution of Earth

Multiple Choice

Which of these picture best shows day and night cycle?

Multiple Choice

Which of these picture best shows 1 year?

Multiple Choice

Which of these picture best shows behavior of light?

Multiple Choice

Which of these picture best shows how shadows are created?

Multiple Choice

Which of these picture best shows the moon Phases?

Multiple Choice

Which of these picture best shows the seasons?

Multiple Choice

Which of these picture best shows the "movement of the sun"?

• early in the morning shadows are long and face west

• at noon shadows are the shortest and face north or south

• in the afternoon shadows get longer and face east

• these patterns happen because the Earth is spinning from east to west; counterclockwise

​

Shadow Patterns

Hotspot

Where is noon?

Hotspot

Where is morning or AM?

Hotspot

Where is afternoon or PM?

Categorize

Options (8)

The picture shows the sun around 10am.

The tree's shadow would be facing west.

The sun will rise again in less than 12 hours.

The sun will reach the west horizon in about 3 hours.

The Sun sunrise about 3 hours ago.

The Sun is setting in the west in this picture.

The tree's shadow would be facing east.

The Sun will be at noon in about 2 hours.

A teacher asks students to explain what they see in this picture. Four student explanations are giving. Categorize whether they are true or false.

True

False

Dropdown

If the picture is following a compass rose with the left side of the picture being west and the right side being east what time would this picture be? ​ ​

Select answer

Dropdown

If the picture is following a compass rose with the left side of the picture being west and the right side being east what time would this picture be? ​ ​

Select answer

Dropdown

If the picture is following a compass rose with the left side of the picture being west and the right side being east what time would this picture be? ​ ​

Select answer

Dropdown

If the picture is following a compass rose with the left side of the picture being west and the right side being east what time would this picture be? ​ ​

Select answer

Dropdown

If the picture is following a compass rose with the left side of the picture being west and the right side being east what time would this picture be? ​ ​

Select answer

Dropdown

If the picture is following a compass rose with the left side of the picture being west and the right side being east what time would this picture be? ​ ​

Select answer

Light Behavior

Categorize

Options (20)

Some light is refract

The remaining light can be absorb

Allows some light to pass through

Frosted glass is an example

Can be used for privacy while allowing light

Commonly used in lampshades

Clear glass is an example

Water is transparent

Air is generally considered transparent

Plastic wrap can be transparent

Diamonds are transparent

Clean windows allow clear visibility

Blocks all light

Wood is an example

Metal surfaces

No light travels through

Concrete is an example.

All light is absorbed.

All light travels through it.

No refraction happening.

Organize these options into the right categories

Translucent

Transparent

Opaque

Multiple Choice

Which picture best represents the light in the image?

Multiple Choice

Which picture best represents the light in the image?

Multiple Choice

Which picture best represents the light in the image?