1) Which part of a cell allows nutrients and other materials to enter or leave the cell?

1. cytoplasm
2. nucleus
3. chloroplast
4. cell membrance

2) Which human body system controls production of the hormones that regulate body functions?

1. digestive
2. endocrine
3. respiratory
4. skeletal

3) Hereditary information is found in a cell's

1. chloroplasts
2. chromosomes
3. cytoplasm
4. membranes

4) What is a major cause of variation within a species?

1. sexual reproduction
2. asexual reproduction
3. extinction
4. photosynthesis

5) Which process is shown in the diagram below?

1. metamorphosis
2. regulation
3. fertilization
4. respiration

6) A male chimpanzee has 48 chromosomes in each of his regular body cells. How many chromosomes would be found in each of his sperm cells?

1. 96
2. 48
3. 24
4. 12

7) The diagram below shows materials needed for survival being transported inside a plant.

Which body sustem performs this function in humans?

1. circulatory system
2. digestive system
3. excretory system
4. respiratory system

8) The energy content of food is measured in

1. ounces
2. degrees
3. grams
4. Calories

9) The diagram below shows the Moon revolving around Earth as viewed from space.

What makes it possible to see the Moon from Earth?

1. The surface of the Moon emits its own light, which can be seen from Earth.
2. The Moon absorbs light during the day and emits the light at night.
3. Light emitted by Earth illuminates the Moon's surface, making it visible.
4. Light emitted by the Sun is reflected to the Earth by the Moon's surface.

10) The solid part of the Earth's surface is called the

1. hydrosphere
2. lithosphere
3. troposphere
4. atmosphere

11) A rock that contains fossil seashells was most likely formed as a result of

1. volcanic activity
2. sedimentation
3. heat and pressure
4. magma cooling

12) The diagram below shows the rock cycle.

Which two processes result in the formation of igneous rocks?

1. melting and solidification
2. sedimentation and evaporation
3. crystallization and cementation
4. compression and precipitation

13) What process is occurring that makes your breath become visible during the winter?

1. boiling
2. melting
3. condensation
4. evaporation

14) In which situation is a chemical reaction occurring?

1. salt dissolves in water
2. a nail rusts
3. ice melts
4. a glass breaks

15) As ice cream melts, its molecules

1. absorb heat energy and move farther apart
2. absorb heat energy and move closer together
3. release heat energy and move farther apart
4. release heat energy and move closer together

16) Which diagram best shows the property of refraction?

17) A student pushes against a wall with 20 N of force and the wall does not move. In this situation, the wall exerts

1. 0 N of force
2. less than 20 N of force
3. 20 N of force
4. more than 20 N of force

18) The Data Table below shows the average distance of four planets from thew sun and the approximate Time it takes those planets to orbit the Sun.

Which Statement is best supported by the data in the table?

1. Venus takes less time to orbit the Sun than Mercury does.
2. Mars takes less time to orbit the Sun than Earth does.
3. Mars takes more time to orbit the Sun than Earth does.
4. Venus takes more time to orbit the Sun than Mars does.

19) The data table below shows the masses and volumes of three objects (A,B, and C)

The fornmula for calculating an object's density is :

Which statement about the densities of these three objects is correct?

1. B is more dense than A.
2. A is more dense than C.
3. B and C have equal densities.
4. A and C have eqaul densities

20) The diagram below shows the frequency and wavelength of various types of electromagnetic energy.

Which type of electromagnetic wave has a wavelength of approximately 10^-10 meter and a frquency of 10^{18 hertz?}

1. infrared
2. radio
3. X ray
4. radar

21) The Graph below shows the distance and time traveled by four cars.

Which car traveled the slowest?

1. Car #1
2. Car #2
3. Car #3
4. Car #4