The pictures show the Sun and the stars as someone might see them from Earth.
B. The Sun is much closer to the Earth than the stars are.
How can humans conserve water? A.keep the water running while brushing their teeth B.leave the water hose on all day C.take quick showers instead of baths D.run the washing machine daily
C.take quick showers instead of baths
Which of the following is a way people can reduce pollution?
C.reduce the number of cars by riding together to work or school
A chemical company has just dumped tons of hazardous waste into an empty field near their factory. What effect will this have on the ecosystem of the area?
D. The soil will be contaminated so plants won't be able to grow, and animals won't be able to get energy if there are no plants.
The students in the picture have designed a test to investigate A. how sound moves through different materials. B. how the water cycle works. C. how shadows form. D. how toy cars accelerate.
C. how shadows form.
Electrical energy is able to move through materials that are conductors, but insulators do not conduct electricity well. Which of the following materials are good insulators?
B. I, II, and IV only
Dean looks outside one autumn night during November. He sees the constellation Pisces and draws the picture below to represent it.
D. next autumn
Which substance is insoluble in water? A. sugar B. salt C. sand D. soap
C. sand
In the food chain above, which organism makes its own food using energy from the Sun? A.kinkajou B.tree C.jaguar D.termite
B.tree
Which kind of water source is usually the largest? A. a lake B. a pond C. a river D. an ocean
D. an ocean
Ashley lives in a city by the ocean. Lyla lives in a city that is not located near a large body of water. If both of the cities are located at the same latitude, which of the following is most likely true?
A. The climate in Ashley's city is more stable than the climate in Lyla's city.
All animals need food to survive. Which of these is a use for food? A.motion B.body repair C.growth D.all of these
D.all of these
Examine the photo below. How will the shadow cast by the tree change over the course of a day?
A. It will move from its position, and its size will change.
The minerals diamond and quartz can both be colorless. However, diamond will scratch quartz, while quartz will not scratch diamond. This is because each has a different ____. A.breakage pattern B.streak color C.crystal structure D.hardness
hardness
About how much of the Earth is covered by water? A.30% B.70% C.90% D.50%
B.70%
Marcie placed 1 kilogram of water in a pan and put the pan on the stove. If all of the water evaporates to form a gas, what will the weight of the gas be? A. 1 gram B. 1 kilogram C. 5 kilograms D. 50 grams
B. 1 kilogram
Darrell has 35 grams of melted chocolate. He pours all of the melted chocolate in molds. After he allows them to cool, Darrell has two solid bars of chocolate.
A. The chocolate bars weigh exactly 35 grams.
A mixture of two liquids had a total weight of 26.0 grams. A scientist separated the mixture by evaporating liquid A out of the mixture. The remaining liquid B had a weight of 10.0 grams. This data is shown in the table below.
B. 16.0 grams
Katie looks out her bedroom window on a clear night. The stars in the sky look like tiny points of light. Katie knows that the Sun is also a star, but it looks much larger than all of the other stars in the sky.
The stars in the night sky are all much farther away from the Earth than the Sun is.
_______ recycle dead plants and animals by turning them into minerals and nutrients for the soil. A. Herbivores B.Predators C.Green plants D.Decomposers
Decomposers
What happens when the baking soda mixes with the vinegar? A. The baking soda and the vinegar both stay the same. B. The baking soda turns into vinegar. C. The vinegar turns into baking soda. D. A new substance forms.
D.A new substance forms.
The picture below shows the path of motion of a football that Terrell is catching. Why did the football change directions in the middle of its path?
force of gravity
Which of these is a good way to conserve resources? A.dump trash into the ocean B.pour poisonous liquids onto the ground C.throw all materials in the garbage D.recycle plastic and glass bottles
D.recycle plastic and glass bottles
Sugar, orange juice, and ice are all examples of matter.
A.They are made of particles too small to be seen.
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