IOE Đăng Ký
IOE Đăng Nhập
IOE Hướng Dẫn
Từ Vựng Tiếng Anh
Luyện Nghe Tiếng Anh
Tìm kiếm đề thi tiếng Anh, bài học tiếng Annh - thật dễ dàng!
Giải Toán Trên Mạng
Học Từ Vựng Tiếng Anh
Câu hỏi thường gặp
Tiếng Anh Lớp 7
ViOlympic Tiếng Anh Lớp 7
Đề Thi ViOlympic Tiếng Anh Lớp 7 Vòng 6
Chọn câu trả lời tốt nhất cho những câu hỏi dưới đây.
The Indian River Lagoon
An estuary is a body of water in which fresh water draining from the land mixes with salt water from the ocean. The result of this mixture is an environment with abundant plant and animal life. The Indian River Lagoon is a 156-mile-long estuary on Florida’s eastern coast. It is a diverse estuary, supporting thousands of species of plants and animals.
The food web and food pyramid shown above are examples of the relationships that exist in the Indian River Lagoon ecosystem.
Which of the following has the largest population in the Indian River Lagoon ecosystem?
In the Indian River Lagoon ecosystem, many organisms compete with one another for food sources.
Which organism in the food web competes with egrets for food?
Which of the following statements most accurately describes the energy transfer between the levels of the food pyramid in the Indian River Lagoon?
Energy travels up the pyramid.
Energy stays in the phytoplankton at the lowest level.
Energy is released into the environment only at the top level.
Energy moves from the flounder to both the clam worms and egret.
Jennifer rolled a marble up and over a ramp very quickly. Which diagram shows the path that the marble will travel?
Which gas is a waste product given off by the respiratory system of a human?
Sulfur dioxide (SO
Carbon dioxide (CO
An oscilloscope is an instrument that can be used to display the properties of waves. Melanie studies four pictures of waves from an oscilloscope.
Which picture shows waves with the shortest wavelength?
Which model do scientists think most closely resembles the structure of Earth’s interior?
Iron chloride is formed when 44 g of iron and 56 g of chlorine react completely.
What is the expected mass of iron chloride?
Which change will occur if global temperatures increase and the polar ice caps melt?
Coastal cities will be flooded.
Land for farming will increase.
Crop production will increase.
Climates will become cooler.
Motion of a Cart
The table above shows the distance a cart travels over time.
Which evidence suggests that an unbalanced force is acting on this cart?
The time intervals are even.
The cart’s speed is changing.
The cart moves more than 20 cm.
The distance is recorded in centimeters.
Chủ đề liên quan
Học Tiếng Anh:
Từ Vựng Tiếng Anh Lớp 7
Viết Chính Tả Tiếng Anh Lớp 7
Tìm kiếm đề thi & bài kiểm tra Tiếng Anh
ViOlympic Tiếng Anh
Copyright © 2009 -
Điều khoản sử dụng
Theo dõi ViOlympic Tiếng Anh trên: