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Science STAAR Review

Total questions: 47

Worksheet time: 2hrs 44mins

Name
Class
Date
1.
____________ air rises because it is ____________dense.
a)
Cool, Less
b)
Warm, Less
c)
Cold, More
d)
Warm, More
2.
____________ air sinks/falls because it is ____________dense.
a)
Cold, More
b)
Warm, Less
c)
Cold, Less
d)
Warm, More
3.

Which of the following provides the energy that drives convection within the ocean? (8.10A)

a)

pressure

b)

sun

c)

weather

d)

winds

4.

A student heard the weather forecaster on television say that an area of high pressure was located over his region of the state. What type of weather is the area most likely to experience? (8.10B)

a)

cold and wet

b)

dry and clear

c)

stormy

d)

cloudy and wet

5.

Which of the following best shows a warm front? (8.10B)

a)
b)
c)
d)

neither

6.

Which of the following best shows a warm front? (8.10B)

a)
b)
c)
d)

neither

7.

What must be available for a hurricane to form? (8.10C)

a)

cold ocean water

b)

warm ocean water

c)

land

d)

wind

8.
This is the symbol for a... 
a)
Cold Front
b)
Warm Front
c)
Stationary Front
d)
Occluded Front 
9.
This is the symbol for a... 
a)
Stationary Front
b)
Occluded Front
c)
Cold Front
d)
Warm Front 
10.

a)

An earthquake

b)

A volcanic eruption

c)

Formation of a rift valley

d)

Building up of a mountain

11.

a)
b)
c)
d)
12.

A different chemical substance is formed when:

a)

a cloth is cut

b)

a cup breaks

c)

a nail rusts

d)

a piece of wood breaks

13.

While completing a science experiment, James notices that he has created a new substance. What type of change took place?

a)

chemical change

b)

physical change

c)

no change

d)

increase in mass

14.

Which of these describes a chemical change?

a)

water evaporates

b)

butter melts on warm toast

c)

aluminum foil is cut in half

d)

a paper being burned

15.

Dissolving sugar in your coffee is a ____ change.

a)

chemical change

b)

physical change

16.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
17.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
18.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
19.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
20.

Is this a balanced or unbalanced force?

a)

Balanced

b)

Unbalanced

21.

Is this a balanced or unbalanced force?

a)

Balanced

b)

Unbalanced

22.

What is the net force?

a)

10 N to the right

b)

10 N to the left

c)

130 N to the left

d)

130 N to the right

23.

What is the net force?

a)

10 N to the left

b)

10 N to the right

c)

50 N to the right

d)

60 N to the left

24.

A change in motion is caused by

a)

Balanced forces

b)

Unbalanced forces

25.

Is this a balanced or unbalanced force?

a)

Balanced

b)

Unbalanced

26.

What is the net force?

a)

0 N

b)

10 N to the left

c)

20 N to the right

d)

20 N to the left

27.

In the diagram given, what happens as we move from right to left?

a)

Stars get larger

b)

Stars get colder

c)

Stars get hotter

28.

Blue stars are the _____________.

a)

hottest

b)

coolest

c)

smallest

d)

biggest

29.

What determines the color of a star?

a)

Size

b)

Temperature

c)

Composition

d)

They are all the same color

30.

As you move from the bottom to the top of the H-R diagram the __________ changes.

a)

Temperature

b)

Luminosity or Brightness

31.
The category that contains the most stars is...
a)
Main Sequence
b)
Supergiants
c)
Giants
32.

The locomotor system includes which two systems?

a)

Circulatory and lymphatic

b)

Skeletal and muscular

c)

Nervous and immune

d)

Digestive and excretory

33.

The excretory system gets rid of:

a)

Nutrients

b)

Cartilage

c)

Waste

d)

Oxygen

34.

The _______ system delivers oxygen and nutrients to every cell in the body.

a)

Circulatory

b)

Lymphatic

c)

Integumentary

d)

Nervous

35.

What is the main product of the endocrine system?

a)

Bones

b)

Blood

c)

White blood cells

d)

Hormones

36.

The circulatory system and the nervous system both:

a)

Deliver blood to vital organs

b)

Extend throughout the body

c)

Send electrical signals to the brain

d)

Guard the body against infection

37.
What is the main  function of the muscular system?
a)
The muscular system carries messages from the brain to the bones to move the body.
b)
The muscular system keeps the bones strong and prevents them from being broken.
c)
The muscular system produces energy the body needs to be able to move.
d)
The muscular system allows movement of bones and helps maintain posture.
38.

What body system does the muscular system work with to give our body shape, structure, and the ability to move?

a)

Digestive

b)

Respiratory

c)

Skeletal

d)

Circulatory

39.

What is the main function of the endocrine system?

a)

For growth and development of the body

b)

It is a protective barrier against infection and disease

c)

To send and receive electrical messages

d)

To create movement

40.

What type of boundary is occurring at A?

a)

Divergent

b)

Convergent

c)

Transform

d)

Subduction

41.

Which diagram shows subduction at a convergent boundary?

a)

A

b)

B

c)

C

d)

All of them.

42.

What causes the plates to move?

a)

Earth's rotation spinning the continents.

b)

Ocean currents pushing the land.

c)

The wind in the atmosphere.

d)

Convection currents in the mantle.

43.

A teacher asks students to make a model of a transform plate boundary. The students use blocks to represent tectonic plates and slide the blocks past each other in the directions of the arrows as shown. Which event can the students best demonstrate with their model?

a)

An earthquake

b)

A volcanic eruption

c)

Formation of a rift valley

d)

Building up of a mountain

44.

The model below shows two continental plates. The folded mountains in this model form at which type of plate boundary?

a)

Transform boundary

b)

Divergent boundary

c)

Subduction boundary

d)

Convergent boundary

45.
The East African Rift Valley lies at what type of boundary?
a)
Transform
b)
Convergent
c)
Divergent
46.
Name this plate boundary.
a)
divergent
b)
convergent
c)
transform
d)
allegiant 
47.
Name this plate boundary.
a)
divergent
b)
convergent 
c)
transform
d)
insurgent